Do hand soaps and sanitizers prevent the growth of bread mold? If so, why? Kids will find out with this fun and informative science fair project idea.

The objective of this science fair project is to analyze the effects of salinity and temperature on water.

This science fair project idea experiments with spinning color wheels and optical illusions.

Will storing cucumbers and tomatoes in the fridge destroy their unique flavors? Find out in this science fair project idea!

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

Does dough rise faster with unbleached or bleached flour? Investigate in this science fair project idea.

This classic children's game demonstrates how sound travels through air vs. through a solid.

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.

Use reusable, recyclable materials--along with a dose of imagination--to build a castle with first grade geometrical forms.

In this science fair project, young children discover what happens when two fluids that have different densities get together.

Discover whether a metal will expand under hot water.

Children learn the six parts of a plant...but do they really understand? Try this plant-themed meal plan to bring school science into the home.

Do you love to make Jell-O? Find out in this science fair project idea if it is possible to make Jell-O with just warm water.

In this science and engineering activity, children will explore types of tunnels and their purposes and then design and build a tunnel of their own.

Get your child outside to observe the clouds, and get a fun exercise in science, writing, and arts and crafts! Here's how.

Be a chemist for a day and study the simple reaction between sugar and heat. Try heating sugar and see what happens!

Experiment about connection of senses of taste and smell. Using blindfold and noseplugs, administer blind taste test. Analyze results and organize data.

Want to boost math and science learning? Take a bug expedition and give your first grader practice observing and charting what they see.

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

Make a seed bomb and let your junior guerilla gardener spread flowers far and wide.

In this activity, students will think about the form and function of household objects as they compare and contrast kitchen serving spoons of various sizes and designs.

This science fair project idea investigates which objects float and sink in honey, water, and oil.

In this exciting and empowering challenge, your child will construct a bridge using marshmallows and toothpicks!

This homemade barometer allows your little scientist to contemplate and compare different air and weather conditions.

Grow potatoes in a plastic bag—easy to grow and harvest, and yummy to eat!

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.

Science fair project that examines how winter storms form and the relationship between temperature, moisture and snow.

Grow these wheatgrass and alfalfa friends and watch their hair spring up in just a couple days!

This weather spinner will improve observation skills by encouraging children to examine and track weather details and patterns.

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