$10 to $25

Spring into action! This jumping robot is made from the tracks of an old snowmobile, a waffle iron, and some rubber bands.    Fast and easy to buil...

Based on the ancient Chinese Tangram puzzle, Tangoes are learning games that combine artistic and mathematical elements to enhance visual perceptio...

Calling all meteorologists-in-training! This compact, 5-in-1 weather station provides the tools to investigate specific weather phenomena and Earth...

Set up an aquarium for your own living sea creature pets! Prepare the salt water and then watch as small brine shrimp hatch from the included eggs,...

Erupt your own volcano again and again! Press down on the "lava lever" a few times and — WOW! The crater pops up and the slime lava flows down its ...