Browse Media Learn More

Free Membership - Access to more than just media

Families and school personnel (including those in training) who have at least one student with a disability can sign up for free membership.

Accessible Media

Standards-aligned videos with high-quality captions and audio description.

Teaching Tools

Create lessons and assign videos to managed Student Accounts.

Training Videos

Educator and sign language training videos for school personnel and families.
Learning Center

Find resources for providing equal access in the classroom, making media accessible, and maximizing your use of DCMP's free services.
Visit Learning Center

Accessibility Information

DCMP's Learning Center provides hundreds of articles on topics such as remote learning, transition, blindness, ASL, topic playlists, and topics for parents.

See All

Accessibility Guidelines

DCMP offers the only guidelines developed for captioning and describing educational media, used worldwide.
Captioning Key
Description Key

Help Center

Learn how to apply for membership, find and view accessible media, and use DCMP’s teaching tools.
Help Center
Continuing Education and Professional Development

DCMP offers several online courses, including many that offer RID and ACVREP credit. Courses for students are also available.
See All eLearning Resources

QuickClasses

Asynchronous, online classes for professionals working with students who are deaf, hard of hearing, blind, low vision, or deaf-blind.

See QuickClasses

Workshops

For interpreters, audio describers, parents, and educators working with students who are hard of hearing, low vision, and deaf-blind.
See Workshops

Modules

Modules are self-paced, online trainings designed for professionals, open to eLearners and full members.
See Modules

Students

These self-paced, online learning modules cover the topics of transition, note-taking, and learning about audio description.

See Student Courses
Make your educational content accessible and broadly available.

DCMP can add captions, audio description, and sign language interpretation to your educational videos and E/I programming.
Learn More

Accessibility

Captions are essential for viewers who are deaf and hard of hearing, and audio description makes visual content accessible for the blind and visually impaired.

Distribution

DCMP can ensure that your content is always accessible and always available to children with disabilities through our secure streaming platforms.

Meet our partners

DCMP partners with top creators and distributors of educational content. Take a look
About the Described and Captioned Media Program

The DCMP provides services designed to support and improve the academic achievement of students with disabilities. We partner with top educational and television content creators and distributors to make media accessible and available to these students.
Contact Us
Services

Captioning, audio description, and ASL services

Professional training for school personnel

Distribution of fully accessible streaming media

Projects

Media Center

Television Access

We Describe the World

YouTube Audio Description

Privacy and TOS

Privacy Statement

Terms of Service

Accessibility Policy

Mission and Funding

Read More

Mathematics

Within Mathematics

Cartoon train engine chugs down the tracks, blowing steam out its chimney. The front of the train resembles a camera lens. Caption reads: "Counting 31 to 40."

Cartoon train engine chugs down the tracks, blowing steam out its chimney. The front of the train resembles a camera lens. Caption reads: "Counting 41 to 50."

Cartoon train engine chugs down the tracks, blowing steam out its chimney. The front of the train resembles a camera lens. Caption reads: "Counting 51 to 60."

Cartoon train engine chugs down the tracks, blowing steam out its chimney. The front of the train resembles a camera lens. Caption reads: "Counting 61 to 70."

Cartoon train engine chugs down the tracks, blowing steam out its chimney. The front of the train resembles a camera lens. Caption reads: "Counting 71 to 80."

Cartoon train engine chugs down the tracks, blowing steam out its chimney. The front of the train resembles a camera lens. Caption reads: "Counting 81 to 90."

Cartoon train engine chugs down the tracks, blowing steam out its chimney. The front of the train resembles a camera lens. Caption reads: "Counting 91 to 100."

On the side of a cartoon purple train car, a picture of two rows of green apples, with five on the top row and three on the bottom row. Caption spells out the number eight.

The numeral 1 appears in black on a white background, on the side of a cartoon red train car. Caption spells out one.

The number 100 appears in black on a white background, on the side of a red cartoon train car. Caption spells out one hundred.

The number 25 appears in black on a white background, on the side of a green cartoon train car. Caption spells out the number twenty-five.

On the side of a cartoon brown train car, a picture of one large blue dice with two white dots on diagonal corners. Caption spells out the number two.

On the side of a cartoon brown train car, one large blue dice with two white dots on diagonal corners. Caption spells out the number two.

Cartoon train with cars the color of a rainbow chugs down a long track, through a hilly desert, as steam puffs out of its chimney.

On the side of a cartoon yellow train car, a picture of three round oranges. Caption spells out the number three.

On the side of a cartoon turquoise train car, a picture shows six tally marks, where a group of four marks are crossed diagonally by a fifth mark, followed by the sixth mark.

On the side of a purple cartoon train car, a picture shows nine red tomatoes, with five on the top row and four on the bottom row

Cartoon train engine chugs down the tracks, blowing steam out its chimney. The front of the train resembles a camera lens. Caption reads: "Learning Shapes."

On the side of a brown cartoon train car, a picture of a large purple circle on a white background. Caption reads: "Circle."

Slide shows a white banner on a light blue background with faded numbers that reads, "Learn Bright. Place Value."

Still image from: Place Value: Ones and Tens

Book cover titled, "Pocket Piggies Colors!" Miniature pig with brown spots hangs over the side of a sky blue tea cup with white polka dots. Text reads, "Featuring the Teacup Pigs of Pennywell Farm. Photos by Richard Austin."

Man and woman in white lab coats look at a computer while pressing buttons on a controller. Caption. They also rely on ballistics to match bullets and guns.

Weather illustration panels for a Monday to Wednesday forecast, with Monday as "Sunny", Tuesday as "Chance of Rain," and Wednesday as "Rain". An arrow labeled Unlikely points to Sunny. Caption. From unlikely on Monday to very likely on Wednesday.

10 seashells lined up in the sand by color next to a yellow bucket. 4 of the shells are black, and 6 of the shells are white. Caption. If 4 out of the 10 shells are dark.

Probability tree with 3 generations on a green background. There's 1 boy and 1 girl child in the first generation, 2 boys and 2 girls in the second, and 4 boys and 4 girls in the third. Caption. Each branch represents a different 3-child outcome.

Closeup of a hand using a black marker to write on a white paper on a clipboard on the grass. The paper reads, "Read and Reread." Caption. Step 1, read and reread the problem.

Woman in a white coat sitting and looking into a microscope in a lab. A graphic of 6 human cells appears at the bottom of the screen. Caption. Doubling the total number of cells each time.

Gloved hand holding an electronic chip with a pair of tweezers. Caption: they call it an artificial leaf.

Woman stands with fingertips touching and lips parted in mid-speech. Bar graph superimposed on left side of screen. Caption. If we were to run the experiment over again many times.

City map with a text overlay that reads, "Map, 1 inch. Actual distance, 25,000 inches". Caption. Represents an actual distance which is 25,000 times longer.

Closeup of a forearm with palm up and 2 fingers pressing on the wrist. Caption. The concept of ratios as well as the use of rates.

Still image from: Read Along With Me Picture Books: Christmas Train

Still image from: Read Along With Me Picture Books: Count on Me 123

Person holds up a book called "Peg and Cat, the Pizza Problem," by Jennifer Oxley and Billy Aronson. The cover illustration shows Peg and Cat in a restaurant, where Peg holds up four stacked pizzas and Cat, standing on a checkered tabletop, holds up three pizzas.

Hand picks up a pair of scissors from a tabletop covered with construction paper, a paper plate, a glue stick, crayon, pencil, and several small triangles, circles, squares, and rectangles cut out of orange, red, green, and yellow paper.

Closeup of an open green eye with a purple colored contact lens, black mascara on the eyelashes, and black eyeliner on the top lid. Caption. With several special properties.

White background with faint gray gridlines and math equation that reads, "23 and seven eighths equals 23.875." A big red arrow points at and labels the decimal point. Caption. Fractional quantities, such as 23 or seven eighths.

Closeup of a person holding a segment of orange with an arrow pointing to a halved orange. Segments on the halved orange are labeled 1 to 10. Caption. Each segment is a tenth of the whole orange.

Several ocean going sailboats docked with sails down is in front of a street lined with multi-story buildings with many windows and pitched roofs. Caption. The city of Copenhagen in Denmark is at sea level.

Top side view of a pizza with cheese, red sauce, and Canadian bacon on a large stainless steel pizza spatula over a gray background.

Centered, front view of the Taj Mahal. A dashed white line is overlaid down the center, with an arrow and the word "Axis" overlaid and pointing to it. A white rectangle overlay is around one of the pillars on the left. Caption. 1 side is a reflection of the other side.

Top side view of a pizza with cheese, red sauce, and Canadian bacon on a large stainless steel pizza spatula over a gray background. Caption. Most likely, family or friends ate the rest of the pizza.

Cartoon of an ancient Roman woman and man wear togas and stand on either side of the Roman numerals one through ten. Text reads, "Roman Numerals."

Middle-aged man with mustache wears sunglasses and holds onto railing of a boat as he leans forward. Caption. That's too fast in there.

Person looking at a computer screen with a complex image. Spanish captions.

Crowd of mostly young people. Spanish captions.

Person at a computer looking at a projection of a wire frame human face on a screen. Caption: how robots interact with humans,

Small airplane midflight. Caption: Momentum is the same direction as velocity.

A sliding scale weighing something. Caption: Weight is a scalar.

Math equations written on a chalk board. Spanish captions.

Two people looking at yellow fluid in a bottle. Caption: in a universal scientific language.

Speedometer. Caption: Velocity is a vector quantity.

Graph of North and East. Spanish captions.

Speedometer. Caption: Velocity is often confused with speed.

A speeding train. Spanish captions.

Still image from: SciShow: The Weird Truth About Arabic Numerals

Simple line drawing of a house on a hill with a roof and 2 windows.

Animation of a rover rolling across a red rocky surface against a red sky. In the center of the frame is a rainbow-colored circular shape. Caption. Here are some more facts about shapes.

Closeup of twisting yellow and red roller coaster tracks. Title card reads, "Shedding light on motion, Episode 2. Acceleration."

Plane with shining lights takes off from a runway and flies above a grassy field. Title card reads, "Shedding light on motion, Episode 1. Speed."

Person turning a spigot. Caption: it is multiplied at the axle, overcoming the resistance force.

School of fish swimming in a tank. Caption: Sometimes they sink like these rocks.

$Black and white closeup of a spiral notebook with equations. Caption. But that fraction doesn't look too good.$

Written equation, pi equals 3.14. Caption. So, pi turns out to be 3, 14 over 100 or 3.14.

Dense points of light on a black background. Caption: The oldest could be 11 to 13 billion years old,

Rotational motion theta equals s over r. Caption: We showed you that equation awhile ago.

An illustration depicts a blue down arrow and a red up arrow representing T A L and T H 2 O in contact with each other. The junction of the two arrows is labeled T e. On screen text, Physics, Part 5, Section A. Caption: is higher than the initial temperature of the water.

Animation of a circular wheel in motion. On screen Text, Projectile motion A. An arrow indicates same time. Caption: It takes the same time to rise as to fall.

A graphical representation of the x y coordinate plane. 2 units from the origin are marked on the positive and negative sides of the x and y axes. An upward arrow extends from the origin to (0, 2). On screen text, what are scalars and vectors. Caption; woman, this vector's direction is 90 degrees.

A woman is in ski outfits. An animation of a red sphere with on screen text, more inertia, greater mass. Caption: The red sphere has greater mass.

Multiplying vectors c. Vector A and Vector B roughly parallel in the same direction. Caption: in the direction of the first vector.

Inset of a young man gesturing with his hands and opening his mouth to speak. Text reads, "Part 1, section A. Integer." Caption. Then we'll get to exponents.

Digital illustration of a Christmas tree. Title bars read, "Part 2, section B. Tree diagrams and factorization." Caption. Except they have numbers on them.

Teenage boy and stuffed animal lie in bed and look up at the ceiling with their mouths gaping open. Caption. Hanging like a mobile from your ceiling.

Circular inset of a young man with pursed lips. Title bars read, "Part 5 and Section B, Putting Inequalities on the Number Line." Math equation on background reads 9 is greater than or equal to X. Caption. All right, with that beneath our belts.

Algebraic equation on maroon and green color block background. Title bars read, "Section B. Equations. Part 1." Math equation on background reads 3, X plus 5 equals 20. Caption. We've got to figure out the value for X.

Algebraic equation on green background. Title bars read, "Section B. Graphing linear equations. Part 2." Text at bottom reads, "In letter form first." Caption. We'll look at it in letter form first.

Man faces camera and speaks slightly off to 1 side like he is in an interview. Text on image reads, "Easy to remember, and a little bit enjoyable."

Rear view of teenage girl sits at ia control panel in a room filled with equipment monitoring panels with switches, lights and racks from the mid-1900s. A man wearing a hard hat stands between the control panel and equipment panels as he speaks to the girl.

Medium view of a man facing camera like he is giving a lesson as a subject expert. Caption. Either by the lengths of their sides or by their angles.

Man faces and speaks directly to camera like he's lecturing. An overlay formula reads, "Right triangle hypotenuse minus leg theorem over hypotenuse and leg of right triangle."

Man crouches on asphalt pavement. He rests his head on his hand which is propped on his knee. He gazes into the distance like he is thinking. An overlay measurement is labeled as 14 feet.

Seated man faces camera while holding a book in a living room setting. He speaks directly to camera as if he is being interviewed as a subject expert. Caption. As we continue our geometric portrait series.

Star Maths cartoon. Rear view of a girl and a boy standing. The boy holds a gun in his hand. Piles of metal and other debris lay before them in an outdoor salvage area. Caption. These label guns aren't very accurate.

Star Maths cartoon. 2 people sit in a red vehicle with a glass-enclosed cabin. Vehicle has thick treads on its tires for rough terrain. Brown hills are in the background. Caption. Sector 145 should be just coming up.

Star Maths cartoon. A binocular outline view of a mountain peak. Caption. Oh, yes! And there's Mervin's Peak.

Star Maths cartoon. Boy turns to watch an older man exiting the darkened room. Caption. Boy as narrator. Where are we going? Caption. Man as narrator. Into space, of course!

Star Maths cartoon. Man sits and leans against a pipe-like post. This pipe is connected to another pipe that has an attached monitor displaying a bar graph with 4 vertical bars. Caption. The name's Botler, by the way.

Star Maths cartoon. Group of 6 multi-colored robots flying together across a barren, desert area. Caption. Amber as narrator. Look at them. They're good, aren't they?

Star Maths cartoon. Rear view of the heads of a girl and boy looking out of a spacecraft window. They watch hovering spacecrafts drop objects into a large dirt pit below. Caption. This storm has been going on for 3 whole days now.

Star Maths cartoon. Woman sits in a spacecraft pilot's chair while a boy and girl stand next to her. All 3 look sideways and in the same direction. Caption. Rocks in space. They can do damage.

Star Maths cartoon. Girl stands while she speaks to a robot in a room about to be painted. A digital screen on the wall displays rectangular shades of color. A ladder and covered furniture are in the background. Caption. Can you mix new colors?

Star Maths cartoon. Closeup of an older man standing in a room. He appears to be speaking to another person. Caption. All this for only 1,250 igmus?

Star Maths cartoon. Side view of a boy and girl sitting at a dining table eating. Caption. Do you want all of them?

Star Maths cartoon. Large robot hovers next to an industrial floor scale in a warehouse. Text on the scale face reads, "100."

Star Maths cartoon. Person sits at a worktable in a manufacturing plant filled with equipment. 3 robots are to his side. Caption. But I'm making music, man!

Star Maths cartoon. Closeup of a digital number board with 3 rows ending in numbers of tens. The end of row 1 displays the numbers 8, 9, 10. The end of row 2 displays 18, 19, 20, and the end of row 3 displays 28, 29, and 30. Caption. 18, 19, 20.

Star Maths cartoon. A girl and boy use binocular-like devices as they scan the horizon off to the side of camera. Behind them, a vehicle sits on a dirt plain surrounded by brown hills. Caption. Go on, Ten! Go on!

Star Maths cartoon. A boy and girl are seated and turned towards each other in conversation. The girl points her index finger at the boy. Caption. You were channel-hopping.

Star Maths cartoon. Boy looks at a handheld device in 1 hand while his other hand is palm up. He stands outdoors with hills and mountains in the background. Text on the screen reads, "Meters." Caption. We need to measure out 1,000 meters.

Star Maths cartoon. A small and taller robot stand next to each other, conversing. Caption. Eleven, clear up the picnic.

Star Maths cartoon. Man walks through an archway as he speaks on a telephone. A boy and girl sit in the background in a living room and watch T, V. Caption. Do you want me to come meet you?

Star Maths cartoon. Girl sits on a couch in a manufacturing plant. Caption. Hi, I'm Lisa. You must be Amber!

Star Maths cartoon. 1 large robot and 1 small robot are standing and facing each other in a futuristic living room. Caption. No names, just numbers, Miss Amber.

Star Maths cartoon. Red, all terrain vehicle drives through a hilly dirt area with 2 trees that have sparse foliage. Caption. Amber as narrator. Well, there's not much junk this morning.

Star Maths cartoon. Girl holding a pen sits while a boy stands at the head of a table. A notebook rests on the table top which has a digital map display showing planets and stars. Caption. She was probably quite far away.

Star Maths cartoon. An empty all terrain vehicle with 3 wheels on each side is parked outdoors on a dirt surface in a desert-like area. Caption. Ha! Let's see where it landed.

Star Maths cartoon. A boy, girl and 3 robots stand on a smooth floor in a room with decorative, pipe-like structures and lighting. The boy points up towards a robot standing on a balcony above him. Caption. Botler, number 364, please.

Star Maths cartoon. Girl raises her hand with 3 fingers up and thumb folded in while using a beverage-making machine in a futuristic kitchen. She speaks and looks at a boy near her. Caption. 4 tablespoons of sugar.

Star Maths cartoon. Boy and girl face each other as they sit and talk over a dinner table. Caption. Probably typed the wrong numbers, again.

Star Maths cartoon. Girl stands in a spacecraft and holds 1 hand with thumb up in front of her face as she talks and looks to the side. Caption. Are you sure? 6 goes into 12 twice.

Star Maths cartoon. Hand extends over a paper with a painting of a butterfly's body and 1 set of wings. 6 pots of paint in different colors, brushes, and colored pencils sit on the table top. Caption. I'm making her a card.

Star Maths cartoon. A boy and girl approach a convertible-like car that is parked outdoors. Caption. Relax, Uncle Zak's miles away.

Star Maths cartoon. Boy looks upwards and stands with his arms outstretched on a blue floor outlined with green and black hazard tape. Caption. Help! Sam, get me out of here!

Star Maths cartoon. A boy and girl walk through a storage room with shelving. Flying robots are nearby and are restocking inventory on warehouse shelves. Caption. Boy as narrator. What was that? Caption. Girl as narrator. What?

Star Maths cartoon. Back view of a boy and girl outdoors and looking at a futuristic truck with a glass enclosed cabin and an open cargo bed. A green robot stands in the cargo bed. Caption. Where are you off to, Botler?

Star Maths cartoon. Girl in a spacecraft sits at a table with a microphone and monitor. She looks up at a person to her side. A spotted, cat-like creature sits on the table. A robot stands in the background. Caption. Will Lisa be able to get here?

Man looks slightly off camera with an impassioned look. Behind him, the Qualcomm Thinkabit Lab with a collection of colorful toys. Caption. But this is a way to give back in a personal way.

Woman stands next to an overhead projector. Caption. Yeah, okay, let's do that. Let's make these a zero.

Still image from: Teaching in Room 9: Bag Hang, Yoga, Rats, and More

Still image from: Teaching in Room 9: Exploring, Learning, and Growing Together!

Still image from: Teaching in Room 9: Main Characters & Math

Still image from: Teaching in Room 9: Read, Move, Count, and Explore!

Still image from: Teaching in Room 9: Shapes, Letters, Animals, and More!

Still image from: Teaching in Room 9: Stories, Math, Movement, and More

Aerial view of a building surrounded by a body of water in the middle of a large city. Caption: (Scott) Here at the National Aquarium in Baltimore,

Medium view of a man speaking while sitting before a backdrop of the U, S flag and an overlay of the Georgia state flag. Title card below the man reads, "Randy Howe. Author. Flags of the 50 States."

Still image from: Teen Kids News (Episode 2125)

Still image from: Ten Dragon Eggs: A Book About Counting Down

Tessellation pattern of equilateral triangles with 3 circles, each placed at different intersections of 6 triangles. Caption. Each vertex must be the same.

A cartoon says, by nature, I am naturally natural. Caption: Nature of science.

Still image from: The Electric Sheep: The Novel of Complex Biological Systems (Spanish)

Person in a lab setting filling a container from a faucet. Caption: A calorimeter is simply anything used to measure heat.

Person with a lit candle melting the wax into a dish. Spanish captions.

Color illustration of a child working on a math problem using a table with columns for Hundreds, Tens, and Ones held up by a green dinosaur.

Diagram of a circuit showing a battery with leads on the positive and negative side and a lightbulb in the middle. Reduction. Caption: During this process, one substance must gain electrons,

Closeup of a T, V screen with black and white still of Fred Flintstone sitting in a stone chair and turning toward viewer with cigarette in his hand.

Man stands outside in a park setting and appears to be teaching geometry. Next to him, an overlay of a square has the number 4 labeled on each side. Caption. Perimeter of this square.

Man sits on a colorful geometric form on a stage set as he faces and speaks to camera. Text box appears next to him and reads, "If you roll a die 6 things can happen." Caption. "1 meets requirements of our question."

Logarithmic scale shows a horizontal line with equal-sized notched increments labeled 1, 10, 100, and 1,000. Notches between each point are spaced out differently to represent the scale difference. Between 100 and 1,000, the notches representing smaller numbers are labeled "far," while the notches representing the larger numbers are labeled "close."

Digital art. Zoomed-in superscript number 2, representing a number squared, to the left of the quotation-mark notation for "inches."

Geometric illustration of atoms. Caption: So here we've drawn in all the atoms.

Cartoon of Diego and Mica standing outside next to a large colorful box. They are looking up at Alterio who appears to be speaking into a megaphone. Spanish caption. No, no lo suelten todavía.

Cartoon of a ferris wheel with Diego, Mica, and Alterio riding in one of the baskets. Spanish caption. Ah, me encanta la vuelta al mundo.

Cartoon of Alterio the hamster standing on a patchwork quilt in a home setting. A thought bubble leads to an image of a bicycle. Caption. Una bici no vendría nada mal.

Cartoon of Diego, Mica, and Alterio standing outside on a grassy hill next to a white banner stretched across posts that reads, in Spanish, "Entrenamiento para exploradores principiantes."

Cartoon of Alterio the hamster standing on a wood surface with an interested expression on his face. He's holding up a finger and looking up like he's talking to someone. Spanish caption. Cada 15 minutos, es un cuarto de hora.

Cartoon of an outdoor basketball hoop in front of a garden wall with hills and cacti in the distance. A basketball flies in towards the hoop from offscreen. Spanish caption. Oh, ahora es más difícil porque estoy más lejos.

Cartoon aerial view of a hand pointing down at a game board with a colorful patchwork of various geometric shapes. The hand is pointing to the orange triangle. Spanish caption. Se pueden hacer un montón de figuras.

Cartoon of Diego and Mica standing in front of a red trash container looking up and away in the same direction. Spanish caption. Traemos tapitas para reciclar.

Cartoon illustration of a green ring with show lights surrounded by a seated audience. Diego stands on a calculator that shows 83. Alterio stands on a blue box with the thought bubble, 37 plus 46. Mica stands behind a pink podium looking out.

Cartoon of Diego and Mica standing next to a chalkboard and looking at a list with a number tally. The list is labeled Camiones on the left and Ruedas on the right. Spanish caption. ¡Perfecto!

Cartoon of Alterio the hamster jumping in the air above colorful cards with number sequences. Spanish caption. Traidora, jamás lo hubiese esperado de una amiga del alma.

Cartoon of Alterio the hamster holding a purple $100 bill with eyes closed and hand pressed to his cheek like he is upset. Spanish caption. Mi último billete.

Cartoon of a hand holding a measuring tape across what appears to be blue shelves in partial view. Spanish caption. Mide en total 110 centímeters.

Cartoon of Diego, Mica, and Alterio walking across a calendar. The date reads 21 and is decorated with flowers, grass, and the label ¡Día de la primavera! Spanish caption. 21 de septiembre, el día de la primavera.

Screenshot of a colorful math equation that reads 7 times 5 equals 35. Spanish caption. Hizo cinco por siete, que es igual a siete por cinco.

Diego and Mica stand in a kitchen decorated with birthday balloons and banners. A woman and girl stand and watch them from across a party table. Spanish caption. ¡Ah, una fiesta sorpresa!

Cartoon of Diego using a long colorful pointer to point at a dartboard with red darts at 150 and 500, blue darts at 100 and 250, and green darts at 150 and 400. Spanish caption. Con este, hiciste 500 puntos.

Diego stands behind a store counter looking at a man who is also behind the counter and holding up a notepad for Diego to see. Behind them, there are sundry items stacked on shelves. Spanish caption. Tienen que sumar todos los números de esta hoja.

Cartoon of Mica holding a tray of food and holding up the number 4 on 1 hand. She looks down at a table in front of her that has 5 plates filled with the food on her tray. Spanish caption. Y ahora sobran 4.

Timed video game showing Diego holding a fork and Mica standing by. Next to them, a column of vegetables with number points in the hundreds. Spanish caption. Computerized voice as narrator. Puntos sumados, 1,700.

Cartoon of Diego, Mica, and Alterio standing next to a structure made of rods and circular joints. Mica plays the flute which appears to make a few rods and joints float in the air above the structure. Spanish caption. Se llaman caras laterales.

Cartoon of Alterio the hamster standing on grass with a smug expression on his face. He's holding up a finger and aiming a blue pen with the word Narcado on the side. Spanish caption. Seguro como que me llamó Alterio.

Cartoon of a woman holding a cardboard box reacting with surprise to something out of view. Behind her, there are orange lockers with numbers on them. Spanish caption. Bueno, les voy a mostrar.

Cartoon first person aerial view of Alterio the hamster holding a package of mints. He has turned the package and is looking down at the ingredients section. Spanish caption. Um, no puedo leer esta letra.

Cartoon of Mica standing outside next to a homemade cardboard castle. She's wearing a crown decorated with buttons and hugging Alterio the hamster to her chest. Spanish caption. Ay, gracias, mi príncipe.

Cartoon of Diego driving a truck along the border of a field of planted young sprouts. Spanish. Y lo resolvemos dividiendo.

Geometric design of a large cat. Caption: (narrator) First, define the surface of the shape geometrically.

Digital map of the United States divided into six vertical blocks of color with clocks above each section. Text reads, "Time Zones."

Cartoon of Robo, J, 5, a pink robot hovering above a paved outdoor surface looking off at something out of view. Caption. Watch out for the rolling circles.

Cartoon of a yellow toy construction truck parked at an outdoor construction site with various materials scattered about, such as red pillars, gray bricks, and wood pallets. Nearby, a smaller green forklift lifts a blue and green panel in the air. Caption. Forklift as narrator. Okay, lower the rectangle.

Cartoon of a bright purple convertible raised up on monster truck tires driving across a paved outdoor area surrounded by trees. Nearby, a blue raised truck is partially visible.

Trigonometry diagram overlayed on a real photo of a bridge with a labeled triangle. Labels include an 85-degree angle and opposite side of 120 feet, with adjacent side and hypotenuse not defined. A written equation reads sine theta equals opposite over hypotenuse. Below that, sine 85 degrees equals 120 feet over hypotenuse. Caption. Is the ratio of the opposite side to the hypotenuse.

Man crouches down to hold up a yellow rod in vertical position as a girl crouches a few feet across from him. A triangle overlay is drawn to show the angle of elevation. Next to this, an identical triangle is drawn, this time with a tall metal sculpture in a plaza. Caption. The angle of elevation is the same.

Person holding a twisted strip of material. Caption: This shape is called a Möbius strip.

Trace wears scarfs around his shoulders and talks. Caption: We are here, today, to lay to rest the kilogram.

Children sit next to each other in rows of desks in a classroom. Below them is a headline on a blue banner that reads, “Comparing and Ordering Fractions Meaningfully.”

Child sits at a desk in front of a teacher, answering a question. Below him is a headline on a blue banner that reads, “Letting Algorithms Emerge Naturally.”

Four students sit at a table holding small dry-erase boards. A girl points to an equation on her board that reads, “½ = 1 half.” Below them is a headline on a blue banner that reads, “Teaching the Concept of Equivalence, Not Just the Rule.”

Two children sit at a table in a classroom. Below them is a blue banner that reads, “The Importance of the Unit.”

Student sits at a table in a classroom. Below her is a blue banner that reads, “The Meanings and Representations of Fractions.”

Blackboard background with a clip art graphic of a brown-haired woman next to a big pencil. Above that is text that reads, "Using a ruler to measure inches. Can you help me learn how to measure?"

Blackboard background with a clip art graphic of a brown-haired woman next to a big pencil. Above that is text that reads, "Using paper clips to measure. Can you help me measure my pencil?"

Woman with glasses in a blue shirt demonstrates sign language in front of a black curtain. White text in a red box at the bottom of the screen reads, "Exponent slash power."

Closeup of 3 boulders in a row with grass and trees in the background. Caption. During the next few minutes.

Gray background with a clip art graphic of a smiling brown-haired woman on the left, and a yellow hand sketching 2 suns and 3 clouds on the right. Text in the middle of the screen reads, "Ways to make 5 using drawings. Teaching without frills."

Gray background with a clip art graphic of a smiling brown-haired woman on the left, and 4 math equations that add up to 5 on the right. Text in the middle of the screen reads, "Ways to make 5 using equations. Teaching without frills."

Gray background with a clip art graphic of a smiling brown-haired woman on the left, and 2 red and 3 green apples on the right. Text in the middle of the screen reads, "Ways to make 5 using objects. Teaching without frills."

Gray background with a clip art graphic of a brown-haired woman holding her arm up and smiling on the left, and a yellow waving hand on the right. Text in the middle of the screen reads, "Ways to make 5 using your fingers. Teaching without frills."

Large envelope being weighed on a scale. Spanish captions.

Top view of scale with objects on weighing plate. Caption. It's important to know how light or heavy things are.

Split screen. The left is a white background with a polynomial math equation written and simplified in blue. To the right, a woman works through the problem using a screen in front of her. Caption. Now I need to distribute that negative 1 to that negative 6.

Aerial side view of a computer screen displaying a white screen with a math word problem written and worked out in long form in blue. The text at the top reads, "Example 3. What is the slope of the line that contains the given points?" Caption. The slope of the line that contains these two points.

Split screen. The left is a white background with a math word problem written in blue. Text at the top reads, "Example 3. Determine if the situation presents a direct variation. Below this, the problem is in typed text and the answer is in handwritten text. To the right, a woman works through the problem using a screen in front of her.