Kids will learn how to make a thermometer to to explore liquid density in this great science fair project. Which liquids are affected by temperature the most?

Why doesn't the ocean freeze? Students answer this question by simulating the chemical composition and temperature of arctic waters in their own home.

Here's a place mat your second grader can create, based on the classic frontier tradition of patchwork quilting.

Give your second grader a chance to get his feet wet with measurement before he moves onto the more complicated stuff by trying this activity with him at home.

Transform your kitchen table into a winter wonderland with a cookie and cocoa party that looks freshly dusted with snow.