In this science fair project, students discover how sedimentary layers form as sediments like mud, silt and sand settle over time.

In this free science fair project, learn how to separate salt from water using heat. A great science project for elementary school kids.

Science fair project examining barometric pressure, and how it can be used to predict the weather. How does atmospheric pressures relate to weather conditions?

This educated-guessing game is great for preschoolers. This activity helps your child work on her reasoning skills.

This clay "painting" activity encourages and supports creative development and critical thinking skills.

This activity is a great way to stretch the boundaries of your child's imagination and build up important critical thinking skills.

Try this simple activity with your child to guesstimate the age of a tree in your yard and nurture her developing math skills while you're at it!