Your fourth grader will be astonished to discover the significance and intricacies of his spine as he builds a model of a human vertebral column.

Determine how salinity affects the circulation of warm and cold water. Note whether the warm water mixes or forms a layer with cold water.

This experiment evaluates how a diet that is rich in "mood-enhancing" foods affects the way people feel over several weeks.

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

In this activity, your child will learn about a style of gardening that uses moss, also called "kokedama."

In this activity, students will create a stop motion animation by creating a clay figure and taking a series of digital photographs.

This activity works well with a group or just with a parent and child, and it can make a great party game since it's both fun and inexpensive.

Many ancient cultures used the rising or setting sun to create calendars. Observe the setting sun once a week to come up with your own solar calendar!

Help your child understand surface tension by showing them how they can create a "skin" on top of water.

Help your child plant a "tea garden": a garden made of herbs for making teas.

Compare different remedies for cooling the mouth after eating spicy food.

This easy project for little hands uses mushroom spores to make an imprint of the mushroom, and the result is very beautiful.

Demonstrate Newton's laws of motion by examining the relationship between mass, force, and acceleration during free-fall.

Here's a fun activity to reinforce the physics concept of stored energy for your middle schooler.

Determine whether butterflies like to drink sugar water, salt water, or plain water.

Excite your fourth grader by recreating ancient Viking myths. This miniature longboat will explore the principle of water molecules expanding when heated.

In almost every preschool classroom is a sensory table. Learn how to make one at home!

This experiment tests which gender is better at catching how a magician performs his tricks.

This experiment will explore if magnetism has any effect on the regeneration abilities of flatworms.

This project examines the concentration of dissolved oxygen in water, with and without oil.

This cool physics demo illustrates the simple harmonic motion of a pendulum while teaching kids the important concepts of potential and kinetic energy.

This activity challenges your student to use spatial reasoning and computational thinking to program multiple robots.

This experiment explores whether music affects the growth of bacteria and could help figure out better ways to process sewage and other microbe-assisted duties.

In this activity, students will be challenged to describe and count the ways a toy moves from one position on a grid to another.

Learn whether writing things down really makes things easier to remember.

Create a mini plant habitat with your kid to help teach him what it takes to make an ecosystem work.

Make your own marshmallows and mix up some very interesting third grade chemistry lessons while you're at it!

In this activity, children will let their imagination run wild as they design and build a new planet in the solar system.

Has your child ever asked you how a submarine works? Here's a simple bathtub project that will make for a hands-on answer.

This exploration of different types of energy will help young minds appreciate and observe thermal, kinetic, mechanical, and other forms of energy.