How does bleach kill bacteria? Kids find out in this impressive bacteria science fair project by testing different concentrations on a safe strain of E. coli.

Why does honey crystallize? This science fair project project answers this question and identifies the variable that makes this sweet solute crystallize faster.

Get your child excited about measuring with this fun and easy household measurements activity.

Making decorative pottery is a great way to experiment with making patterns and texture on a traditionally smooth surface.

Help your preschooler grasp the concept of ordering and sequence while teaching him valuable vocabulary with simple activities around the house.

Do your laundry and your science project simultaneously! This science fair project investigates whether the color of a garment affects the time needed to dry.

In this science fair project, we learn how air molecules move as a result of density, convection, and air currents.

Countries all around the world have been using the abacus for thousands of years to make math easier. Have your kid make his own abacus to practice arithmetic.

This science fair project looks one of the most important factors affecting seed germination: water. A fun and easy plant biology experiment for 3rd graders.

These handmade Christmas treat cups are perfect for house parties, school celebrations, and holiday bake sales.

Why do plants wilt? Kids will learn to think critically about what environmental factors affect plants, and what plants need to survive.

In this activity, you child will learn about how heat changes food. On the next sunny day, head outdoors to make a treat in an outside oven! Here's how:

In this activity, have your second grader practice measuring by finding the height, weight, and length of their most treasured toy!

Use an Elihu Thomson apparatus, also known as a ring launcher, to learn about electromagnetism concepts and the properties of various metals.

This science fair project idea explores whether factors such as temperature and concentration affect the pH of a solution.

Make a bear cave for your child to play and explore, learning about bears and winter hibernation.

Have fun with bubbles and find out why there are bubbles in your tap water in this cool science fair project idea.

How do animals keep warm? In this experiment, find out whether fat insulation resists cold temperatures and learn how this works in the animal kingdom.

Introduce your fourth or fifth grader to volume by having him build rectangular prisms, and then count each sugar cube to check his volume calculations.

Science fair project that tests how heat affects the chemical reaction between a seltzer tablet and a glass of water.

Study the effects of wind and temperature on evaporation. Place wet sponges in different environments, check at regular intervals, track time required to dry.

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.

Have your child observe, measure and record the amount of space objects occupy, and you'll have an inside space explorer on your hands in no time!

Explore properties of liquids and how temperature and salinity effect surface tension of liquids in this fun- filled science fair project idea.

Analyze competed scientific studies to determine the effectiveness of ancient remedies. Create a chart that illustrates the effectiveness of these treatments.

Forget the measuring stick! This fun math activity uses a body part, your child's hand, as a ruler.

Determine the relationship between the speed of a sound and the temperature of the air it passes through.

Homemade Halloween treats make great party foods for an All Hallow's Eve get together. These four homemade Halloween treats are scary-good.

Kids will learn how to measure the viscosity of liquids by making their own homemade viscometer in this great science fair project idea.

This fun science project helps to investigate how much water can a plant take up and release in a certain period of time through the process of transpiration.