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What are the effects of fertilizer on plant growth? What's the best fertilizer type (solid, liquid or powder)? Kids find out in this science fair project idea.

The objective of this science fair project idea is to examine light refraction as it passes through liquid crystals.

Learn about this simple machine and make a pulley of your own to use for fun science trials.

The goal of this science fair project is to demonstrate different ways to generate static electricity and record its effects.

Do you think you could walk around upside down -- with your feet in the air and your head on the ground?

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

In this science fair project, learn how a mineral streak is made and how it can help identify an unknown mineral.

Help your kindergarten scientist understand the concept of surface tension with this simple science experiment.

In this hands-on design challenge your child will make their very own Rube Goldberg Machine.

Help your kindergartener expand social studies and science work while creating this lovely bag clip for the holidays.

In this activity, students will be challenged to describe and count the ways a toy moves from one position on a grid to another.

This activity challenges your student to use spatial reasoning and computational thinking to program multiple robots.

The goal of this project is to create an exciting topographical map out of dough.

Here is a hands-on activity to help third graders understand the four points of a compass...and how we use them to get around.

Reuse and recycle cardboard tubes to make spooky spiders, kooky caterpillars, wacky worms, and more.

Check out this science project idea to compare organic produce to non-organic produce and how preservatives in food extend the shelf life of goods.

This science fair project examines which fruits and/or vegetables will ripen prematurely when placed with ripe apples.

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.

Science fair project which simulates the global conveyor belts on a small scale, and observes the effects of wind, density and temperature on water movement.

How does the size of a vibrating surface affect the pitch of a drum? Learn about drum size and pitch with this easy science fair project idea.

In this simple science project, learn about what causes dew and what affects dew formation with a drinking glass, ice, and a soda bottle.

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!

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.

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

This experiment challenges students to forecast the weather based on the surrounding areas' weather.

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

Could there be toxic chemicals lurking in the cupboards and closets of your home?

Do plants get crowded? Have your curious kid investigate how plants respond if they're forced to grow together in a confined space.

Experiment with buoyancy to learn how a submarine rises and sinks in this classic science experiment.

In this fun science experiment, kids will determine the best method for ripening avocados and discover the cool chemical reaction that makes this possible.