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Science fair project that compares the freezing temperature of salt water and freshwater in order to learn about supercooling and condensation nuclei.

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

This science experiment examines the role of fat in food, especially in making bread rise and whipping cream.

4th graders construct an ocean food web to learn about consumers and trophic levels, food webs, and food chains in this cool ecology science fair project.

This science fair project idea investigates how the shape of an object affects drag.

Develop your child's mathematical and engineering skills with this fun building brick challenge. In this activity, your learner will be challenged to create a boat out of building bricks.

In this activity, children will work on their mathematics and engineering skills as they attempt to recreate the Eiffel Tower out of building blocks!

Milk is made of water and fat; but how can you separate the two? Find out in this color changing milk experiment.

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.

You've heard all about oil spills, but can they really be that bad? After all, vegetable oil is in almost every yummy baking good from cookies to brownies.

Cleaning can be a chore, but not with this sudsy experiment!

This science fair project looks one of the most important factors affecting seed germination: water. A fun and easy plant biology experiment for 3rd graders.

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

Cherries usually burst with flavor, but in this science experiment they burst with osmotic pressure. This science activity will blow your curious kid's mind!

Check out this fun science fair project to make a vinegar and baking soda balloon and demonstrate how gas is created as a result of the chemical reaction.

This science project teaches students the relationship between compost and plant growth. Students conduct an experiment with different types of compost.

Learn about the layers of the Earth and make a model! Create a earth layer book, cake, or clay diagram.

Why does honey crystallize? This science fair project project answers this question and identifies the variable that makes this sweet solute crystallize faster.

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.

This science fair project idea develops an understanding through experimentation of which shapes are the most structurally strong.

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?

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

This science fair project idea explores alcoholic fermentation at work by making your own soda.

This science fair project idea explores how length affects the weight a bridge can hold.

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

This science fair project idea determines if crystals will absorb food dye and if colors will mix by the process of diffusion.

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

The objective of this science fair project is to examine the effects of temperature on salt and water solutions, as they form crystals over time.

Total alkalinity and pH personal care products are controlled to prevent skin irritation. Learn more about basic and acidic substances in this science project.