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

All you need are pencils, paper and some scissors to get started on this easy and fun game to review astronomy information, or other types of study concepts.

Get your child math and science savvy with this fun outdoor classification game. Using chalk, your child will classify what she sees in the natural world.

This fun and crafty activity is easy enough for your child to lend a helping hand and makes a great indoor or outdoor game.

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

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

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

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.

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

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

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

This interdisciplinary card game will have your third grader working on math facts as he travels through the solar system!

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

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 tactile activity helps kindergarteners learn about texture.

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

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

Create a self-portrait from natural materials in this collage craft activity!

This activity will help your child review science concepts, learn new ones, and become familiar with examples of various concepts in science. Plus, it's fun!

Encourage a group of third graders to play this fun game of Whistle Hide-and-Seek as a warm-up to get them prepared for finding a "lost" camper.

This kinesthetic learning activity will help your fourth grader get a firm grasp on the immensity of the solar system.

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!

In this activity, find out who the flowers' "partners in crime" are by being a flower spy!

Help your child understand the scientific concept of evaporation with this fun outdoor science activity.

Learners hypothesize about and experiment with soil erosion in this hands-on activity.

Want to get your bookworm interested in science? Check out this cool activity that teaches kids how to write science fiction!

Here is a hands-on activity to help third graders understand the four points of a compass...and how we use them to get around.