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

Use dirt and different colors of craft sand to make unique layers in a clear plastic cup to represent the layers of the Earth.

Determine the growth rates of different types of human hair. Ask volunteers to not cut their hair until the end of experiment. Measure hair length.

Design and build a balloon rocket from an existing design. Think of the ways in which existing designs can be improved, new practical applications

How do people move pianos and heavy furniture into tall buildings? Show your kids some pulley potential with this simple household exercise!

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.

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.

This science fair project idea recreates the movement of planetary bodies in order to learn why they sometimes appear to move backwards.

What are buttress roots? In this fun science project, make a model of a rainforest tree and learn how they help trees survive in the tropical rainforest!

Make sourdough bread...and learn some colonial history and modern science in the process!

It's not actually that hard to get energy from garbage! Kids learn how to make biogas in the form of methane with this cool and easy science fair project idea.

Students pit the heat capacity of water against the heat capacity of oil while looking at the effects of dipole rotation in this cool science fair project idea.

This project is a vivid, concrete introduction to the basic but important idea that plants need sunlight and water to grow.

Got a birdwatcher on your hands? Bring the birds to your backyard by making a zany bird feeder using an orange and some string.

This science fair project studies whether DSLR and Point-and-Shoot cameras work the same way under all conditions.

This experiment investigates the relationship between the temperature of a candle and its burn rate.

Is your child struggling with the principles of magnetism? Here's a fun activity to demonstrate polarity and understand the basic principles of magnetism.

Tin can phones offer something modern versions don't—a fun project to make with a friend, and a dramatic illustration of vibration and sound waves.

This potato cannon activity teaches your middle schooler about the principle of Boyle's Law. Make a potato cannon and have a blast learning about science.

Unlike other seed sprouting projects, this one allows kids to compare five different sprouts (either 5 herbs or 5 flowers) by watching them grow in a glove.

Your child can explore the wonders of science, and the concept of dehydration, along with creating a healthy and tasty treat!

This project investigates whether chewing gum can help a majority of people with focus and concentration.

Pair a planetarium visit with this fun art project that mimics the look of far-off galaxies.

Get your hands on a concoction that breaks the rules about what's a solid and what's a liquid.

On the next chilly, winter day, invite your fifth grader to make a hand warmer by experimenting with the loaded combination of a few natural ingredients.

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

In this project students learn about the golden ratio and investigate if it can be used to predict people's assessment of beauty in others.

Is exercise a cellular activity? Check out this fun science fair project idea to compare the carbon dioxide production before and after exercise.

This project determines what category of person is most likely to be ticklish.

Discover which battery composition (type) lasts the longest.