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Show your fourth grader how to see her heart in action. Make a simple device out of a drinking straw and clay to help her spot the movement of her pulse!

Here's a simple and fun kindergarten or first grade gardening activity: grow a miniature container garden in a paper egg carton. Great for kinesthetic learners.

Here's a fun math and science activity: help your child explore four different kinds of measurement, using their hand and a few simple household tools.

Your second grader will love this simple soda bottle race car activity. Make a ramp and customize your car for an entertaining way to learn scientific concepts.

The objective of this science fair project is to explore the relationship between acidic and basic compounds.

In this project combining nature, art, math, and science, children make rubbings of leaves then observe shapes and structures and sort the leaf images.

This science fair project idea identifies trees using a dichotomous key.

Want to help make studying the nervous system a little more fun? This thinking cap is a great way to learn external human brain anatomy.

Kids explore how a single movable pulley can confer a mechanical advantage over a fixed pulley in this cool engineering science fair project for 2nd grade.

This science fair project idea investigates emulsifiers that allow oil and vinegar to mix.

This is a fun and inexpensive project and it's a great way for your child to build basic geometry skills, like shape recognition and pattern/angle familiarity.

Help your child create a written message and practice their letters using sticks they find in nature. Here's how to get started.

Is it a square or a circle? See if you can trick your friends with this zany science project!

In this hands-on design challenge your child will make their very own Rube Goldberg Machine.

Air invisible; it doesn't make sounds; you can't pick it up and throw it. So how do we know it exists? Help your second grade scientist figure it out.

Science fair project which uses coins flips to visually demonstrate the probability of an event and how to express it.

In this project students experiment with making music using only glasses of water.

Try this experiment to give your curious kid a more "solid" understanding of how temperature affects the states of matter.

Get your hands on a concoction that breaks the rules about what's a solid and what's a liquid.

Learn about magnifying glasses, concave lenses and inverted images by sending rays of light through a magnifying glass in this cool science fair project!

Science fair project that compares the ecology of different soil samples by identifying which sample has the most invertebrates living in it.

This fun activity makes use of pasta shells, paint, and glue make a crab while your child learns about this unique creature.

Teach your creative second grader about proportions, animals, and proper cutting methods with cucumber carving.

Find out whether matte or shiny nail polish lasts longer.

Construct and experiment with a periscope using reflected light rays to gather an image.

The purpose of this science fair project is to study the properties of sugar and examine individual preferences for sugar and other sweeteners.

Young scientists will investigate people's preferences for saltiness, and make some inferences about genetics and diet.

Learn the basic structure of a DNA strand, which is the double helix, how genes form together, and the resemblance DNA has to a twisted ladder. Create a model.

Plants and light seem to be good buddies, but how far does the friendship really go?

What are the benefits of good posture? Kids will learn about the cognitive effects of good posture through conducting and observing a controlled experiment.