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Learners hypothesize about and experiment with soil erosion in this hands-on activity.

Here's a great activity that uses corks and toothpicks to create a fleet of floating boats. Which design makes for the most seaworthy vessel?

Inspire your child to put on her engineer hat for the day, as she builds her very own, double-decker bridge.

Why doesn't the ocean freeze? Students answer this question by simulating the chemical composition and temperature of arctic waters in their own home.

In this science fair project, students discover how sedimentary layers form as sediments like mud, silt and sand settle over time.

Help your child get to know the least-appreciated of the five senses, the sense of smell, with a smelling station.

Start your toy engines -- this is going to be a fast and friction-filled race!

Stories change as you retell them. The objective of this science fair project is to demonstrate how information gets interpreted, distorted and changed.

This balloon-powered car project is a great way for your kid to learn about energy and how it can be used efficiently.

This biodiversity project examines the biodiversity in your own backyard.

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

This science experiment tests why guacamole goes brown and if leaving the pit in will stop guacamole from turning brown.

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

This activity is a great way to teach kids that, to find examples of science in action, they donât need to look any further than their own backyard.

Watch pre-packaged seeds and seeds taken from inside fruits and vegetables grow. Which ones will grow faster? Read more in this science fair project idea.

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

Kids will build a turtle habitat in order to observe the climate preferences of this cold-blooded reptile.

Your kid can learn about the process of making frozen yogurt and enjoy a homemade, flavorful dessert. Experiment with this fun, chilly food!

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

Along with being an interesting science activity, dehydrated strawberries are also tasty â and healthy!

What better way to celebrate spring than with a fabulous flower party? Pack the day with fun flower activities and treats for a truly springalicious event!

In this fun science fair project, make two different scale models of our solar system using Astronomical Units and planets' relative size!

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

The goal of this science fair project is to discover the science behind carbonated soft drinks and apply this knowledge to create a new one.

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

Celebrate April Fools' Day with a science prank that is sure to amuse...and educate too!

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

Free science fair project idea that examines the differences between cats and dogs. Analyze objective qualities rather than subjective ones.

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

Reinforce your child’s understanding of the alphabet by helping them construct all of the letters using pipe cleaners.