Use simple items to create a kindergarten "grow box" that lets a kid see just how salad plants send down their roots and grow underground.

Roasting pumpkin seeds makes for a great Halloween activity, and a healthy snack!

Would it hurt to skip brushing your teeth just this once? Let's find out by seeing which foods produce the most mouth bacteria.

Does the temperature of a magnet affect its strength? Learn about the relationship between magnets and temperature with this cool physics science fair project.

This science fair project idea determines if the color of light affects the growth of plants.

Discover whether cold or hot water from the faucet will boil faster on the stove.

Teach your child some scientific basics as you explore the densities of various liquids in this fun experiment.

What is vegetative reproduction? Find out how you can clone plants and regrow cabbage from a stem in this cool experiment!

Have your child kick off their summer vacation by making a miniature water slide!

Examine whether distilled water, spring water, or regular tap water yield faster plant growth.

In this windmill model science project, you will build a windmill to learn about wheel-and-axle machines and how these simple machines are used to do work.

This science fair project teaches students about wilting and browning of salad greens.

Does putting soapy water on plants help or hinder plant growth? Kids learn about greywater and how it affects plant growth in this cool science fair project.

The objective of this science fair project is to observe the differences in heat absorption for darker colors vs. lighter colors.

This project examines if computer screen and text color affect retention and if people subconsciously prefer combinations of colors that help their retention.

Want to make Halloween truly eerie? Science to the rescue! These ghouly hands come alive with a little help from simple chemistry.

How do series and parallel circuits work, and which produces the brightest light in a light bulb? Construct both in this project and find out!

In this activity, you'll not only make your own bouncy balls at home, but your child will also learn how polymers are made.

In this fun science project, learn about what happens to cut fruit and experiment with how to stop apples from turning brown.

This science fair project idea builds models of various types of bridges and then determines which bridge design is the strongest.

Science fair project that examines the different types of precipitation, evaluates the density of snow and calculates the ratio of snow-to-liquid.

Find out which type of sponge holds the most water.

Brine shrimp usually live in saltwater. Investigate how salt concentration (salinity) affects the rate at which brine shrimp eggs hatch.

This science fair project idea discovers which brand of bubblegum produces the largest bubbles.

Teach your fifth grader about the wonders of wind by making and observing this winter wind chime.

Help your child learn about animal classification with this fun and delicious activity.

How does distance affect the spreading of light? Kids see diffraction and the inverse square law of light in action with this great science fair project idea.

The buoyant force of water explains why some objects float in water. But why do some objects sink? Find out in this physics experiment and learn about density.

Science fair project which compares the rate of temperature change and the maximum temperature as a result of the angle of light radiation.

This 4th of July, explore fourth grade science and make some safe fireworks in your own backyard using soda pop!