In this science fair project, students make their own rain gauge to measure rainfall.

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.

Kids will love making clouds and learning how to make a water cycle model in this fun science fair project idea that explores evaporation and precipitation.

Science fair project that determines whether windmills can be designed so that birds will not feed on them. Will they discriminate between different patterns?

In this fun science fair project, make two different scale models of our solar system using Astronomical Units and planets' relative size!

Science fair project that helps you create your own compost pile in order to test the efficiency of different methods of composting.

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.

Test your skills as a weather forecaster, and learn some science terms on the way!

This weather spinner will improve observation skills by encouraging children to examine and track weather details and patterns.

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

In this simple and social activity, children use size comparison skills to find objects in nature that are bigger, smaller, longer, and shorter.

This will encourage your child to utilize their observation skills, develop aesthetic awareness, build artistic drawing abilities and learn about the seasons.

Combine your child's natural curiosity with his developing classification and writing skills by helping him create a backyard field guide.

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!

Here's a household scavenger hunt that shows kids the natural sources behind everyday objects...and builds reading skills, too!

There are hundreds of properties in rocks which you can describe, so get your geology goggles on and get ready to rock your child's science skills.

In this fun activity, kids practice measurement and boost fine motor skills as they learn all about how fossils form and even make a few of their own!

Does your child always demand to know why the sky is blue, how the sun moves across the sky, or where wind comes from?

Play Rock Tic-Tac-Toe, the perfect outdoor game for all ages. Help your child develop thinking skills and get away from the TV!

Summer is a great time to work on pre-kindergarten skills that will serve your child well in her first year at school, while having some fun in the sun!

This fall, make a leaf crown that will encourage creative play and your child's interest in the natural world while you help them build fine motor skills.

Here's how you and your teen can stage your own formal debateâbeyond arguing why chores are unethical! Formal debates improve teens' critical thinking skills.

Here's an arts and crafts activity for preschoolers and pre-kindergarteners: build brick buildings with homemade mud bricks made from dirt and water.

This science project challenges students to take learned information about weather and climate control and apply it to come up with creative ideas of their own.

Let your second grader pay homage to an ancient Olympic tradition with this modern day Olympic wreath!

Your preschooler wonât need a passport to go on this nature safari! All you need are paper, crayons and a nature trail or your back yard.

In this cool project, create a lighted, scale model of the different layers of the Sun, including the core, radiation and convection zones, and photosphere.