Explore structural science as Ruff Ruffman uses his new service, called "Ask Ruff First" or "ARF, to help kids looking for a way to keep their mini-golf tower from tipping over in the wind. [5:00]

In this video [2:12], observe a group of children using light to communicate over a distance in this live-action video produced by WGBH. Use the video to observe strategies for using light to communicate across a distance as well as to...

This site provides two video clips of lighthouse beams; observe how the beams move in straight lines over the landscape and away from the source. It also provides two pictures: beams in the setting sun and beams in space. Support...

Explore how light responds when it interacts with different types of juice in a live-action video [1:30] from PEEP and the Big Wide World. Use the video to observe and make evidence-based claims about how light interacts with different...

In this video [4:02] Harriett Elizabeth Cow made a present for Donkey, Purple Panda, Duck Duck, and Bob Dog. It's wrapped in a giant box, and Donkey can't wait to open it! Harriett tells her it's for all four pals, so Donkey must wait...

Donkey Hodie and her pal, Purple Panda, had fun plans for their time at Camp Buddy Buddy. Then the wind came and interrupted their plans! The pals decide they can change the plan. [2:50] Includes a link to a change of plan activity.

This site features the Donkey Hodie videos including full episodes, video clips, and songs.

While playing Camp Buddy Buddy, Donkey Hodie and her pal, Purple Panda, learn that sometimes their original plans need to change. Working together, they find new, unexpected ways to have fun! Video [2:48] and a teacher lesson plan.

Explore how rainbows are produced when light passes from one material to another in this video gallery. Use the four video clips to help students understand how light can respond with a rainbow of colors when it interacts with water and...

Explore natural and human made light sources in the environment in this live-action video [1:46] produced by WGBH. The video can help children observe and identify light sources and describe objects that are visible in the light's path....