In this science fair project, we'll use a liquid crystal thermometer to find out whether exercising makes a difference in people's temperature.

This fall, bake some festive caramel apple cupcakes with your second grader and help her build her math skills while you're at it!

When you rub a balloon on your head, your hair stands up; but is that true for everyone? Does hair color affect static electricity?

The next time you've got a restless second grade earth scientist on your hands, use this experiment to demonstrate crystals and make a tasty treat, too!