In this interactive activity adapted from Anneberg Learner’s Teaching Math Grades 3–5, compare fractions on number lines to determine which class of students wins bubble-gum-blowing contests.

The CyberSquad proves that the area of Hacker's land is equal to the area of Judge Trudy's land in this video segment from Cyberchase.

In this video from Cyberchase, Harry must score a total of 50 points in various events to qualify for the Northern Hemisphere games in New Orleans.

In this video segment you’ll discover how using concentric circles can help you determine how much paint is needed to cover the deck of a carousel.

Johanson reflects on the past decade of his career and shares his philosophies on art making in the first Art School video from KQED. Then, Johanson creates a simple painting based on Venn diagrams, an art lesson developed for students in partnership with SFMOMA for their project, Open Studio: Artist-Designed Classroom Activities.

The levels of contaminants found in particular animals vary widely depending on where they fit into the Arctic food chain, as described in this video segment adapted from LOKE Films and the Arctic Monitoring and Assessment Programme.

In this video segment adapted from LOKE Films and the Arctic Monitoring and Assessment Programme, learn how human populations in the Arctic are affected by industrial contaminants in the food chain.

In this lesson designed to enhance literacy skills, students learn how the theory that explains the position of Earth's continents was established and later modified, and gain important insights into how science and the scientific community operate.

This video segment adapted from the Atmospheric Radiation Program explains the differences in the formation of tropical convective cloud systems over islands and over the ocean.

In this Cyberchase video segment, Matt uses subtraction to help Digit figure out how much time he has left in a cooking contest with Hacker.

In this video segment adapted from ZOOM, two solar cookers are tested against a control to see which can cook a "s'more" faster.

In this video segment, ZOOM guest Cassie takes us on a tour of the coral reef near her home in Key Largo, Florida, and points out some of its unique features.

Indigenous People have been creating cosmetics and natural body remedies for thousands of years. Through trial and error, they have blended science and a deep understanding of human biology to connect with the world around them in very personal ways.

This video from NASA features the Cosmic Origin Spectrograph (COS), which allows scientists to use spectrographic analysis to assess the composition of intergalactic material.

In this video excerpt from NOVA, find out how whole genome sequencing saved the life of Alexis, a fraternal twin who was originally diagnosed with cerebral palsy but, in fact, had an even rarer genetic condition.

This interactive activity from ChemThink takes a closer look at a covalent bond--how it is formed and how the sharing of two electrons can keep atoms together.

In this video segment from Cyberchase, the CyberSquad must get into a vault before Hacker, Buzz and Delete by cracking a code of shapes and numbers.

Mix the letter B with other alphabet letters to make crazy words, and enjoy your own special recipe for family reading time!

Reading and creating comic strips and comic books are engaging ways to promote literacy at any grade level and across content areas. The students in this video are members of a high school comic book club and have access to drawing tablets and Adobe Photoshop, so they can achieve sophisticated results. Even without such software, however, teachers can still integrate digital comics into a wide range of teaching situations.

There are a number of comic books, especially contemporary ones, that are not “school appropriate,” so you might want to guide students’ web research on comic books.