Every four years something funny happens with our calendars -- we add a day! Why do we do this? Discover the science behind leap year.

Be a glow-getter with this energy transfer worksheet!

Have you ever thought about playing basketball in space? This middle-grade science worksheet discusses how forces and Newton’s Laws of Motion affect a game, both on Earth and on the moon! 

Design a helmet from household objects in this engaging first- and second-grade activity!

Experiment with renewable energy from the comfort of home by creating a pizza box solar oven!

Can middle-grade chemists recover the missing information about these elements from the periodic table?

Young scientists are the only hope for finding the missing information from these elements of the periodic table!

Discover the three ways heat can move from one place to another in this middle school worksheet!

Ever wonder why sounds change as they move away from us? Learn all about the Doppler effect with this physics worksheet.

These elements are all out of sorts! Can you check out the periodic table to find the missing information from each element?

Are students studying electricity? Give them a break from the scientific nitty-gritty with this fun word search full of electricity terms!

Important information has gone missing from the periodic table. Can you fix up these elements so that they read the right way?

Glass is everywhere, but have you ever wondered where it all came from? It doesn't grow anywhere -- we have to make it!

Some devious mice have stolen important information from the periodic table. Can middle-grade chemists put the elements back together again?

Lab mice have stolen information from these elements! Students must set everything back in order using the provided periodic table of elements.