Has your kid noticed how much bigger the moon looks when it's low in the sky? Here's an activity you can do to show them that it's just an optical illusion.

In this classic Ivory soap experiment, kids learn what happens to different types of soap in the microwave, and why!

What causes dilated pupils? Young scientists will find out by applying what they already know about changes in pupil size and making models of the pupil.

Kids discover what a homogeneous mixture is by adding sugar to distilled water and identify the various factors affecting solubility.

Discover flight initiation distance as you play around in the park with this fun bird watching project!

Get your sense of humor ready for this fun science experiment that demonstrates the fundamental physics of air pressure.

This science fair project explores how osmotic pressure forces water through the root up into the plant.

This project demonstrates the correspondence between the volume of water displaced by a submerged object and the volume of the object displacing it.

Encourage local wildlife to settle down in your backyard with this adorable bird nest craft.

Make a spring collage with your child to get them outside and those creative juices flowing!

Which music genres have the fastest tempos? The slowest? This experiment determines if there's a relationship between beats per minute in a song and its genre.

Learn about sound physics and do a survey experiment to explore the difference between sound and noise in this science project.

In this activity, your learner will be challenged to create their own tic-tac-toe grid out of building blocks.

Here is a fun middle school science project on factors affecting solubility. Learn how dissolved solids can "crash out" to form crystals when conditions change.

This science fair project examines how seeds hitchhike on animals and clothing.

This science fair project idea determines if the size of the parachute will change the rate at which an object falls.

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

In this free science fair project, build a star clock and learn how to tell time on a clear night by observing the big dipper!

Spiders don't go to grocery stores or fast food chains to get their food -- they set up traps and wait for their food to come to them!

Make a DIY golf putter and design your own golf putting course in this 2nd-3rd grade arts and crafts/game activity.

Science fair project that examines the behavior of water and gravel in creek beds and the formation of sedimentary rocks.

Check out this cool science fair project idea that models the behavior of the cold desert plants: xerophytes and halophytes.

This educated-guessing game is great for preschoolers. This activity helps your child work on her reasoning skills.

Learn about savanna flora and fauna in this science project! Take a look at characteristics of tropical grassland plants and animals that help them survive.

Can a toy car determine the strength of a magnet? In this cool magnet science fair project, young scientists will learn how to measure the strength of a magnet.