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

Children will learn all about cause and effect as they experiment with potion-making in this Halloween themed activity.

Will storing cucumbers and tomatoes in the fridge destroy their unique flavors? Find out in this science fair project idea!

This science fair project idea explores whether white light can be separated into different colors.

This cool science fair project teaches kids about temperature, density and buoyancy using balloons that float with normal air. No helium required!

In this science fair project, students learn how pressure can make the minerals in a rock line up in the same direction and form bands and foliation.

This science fair project will help students learn about non-vascular plants, such as mosses.

This project explores whether nails, toothpicks, straws, or pen nibs are best for applying ink to paper.

Learn about the microclimate of your backyard by tracking rainfall, temperature, and observed weather with hand drawn charts and graphs.

In this plastic wrap science fair project, you'll learn about polymer permeability and find out which plastic wrap keeps food from dehydrating best.

In this physics project, learn about the relationship between light intensity and distance using a laser pointer, flashlight, and graph paper!

This science project teaches young students about germs, bacteria, and the importance of washing their hands. Students will test what is the best way to wash.

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

How does salinity affect the point at which water freezes? Kids will find out by performing this cool melting ice experiment.

Recreate the fantastic phenomena of solar eclipses with your child using just a flashlight, a quarter, and her very own face!

Using an empty tennis ball can and a swimming pool, you will determine if it's possible to have a conversation under water.

Crystals are a very special structure. In this third grade activity, your child will learn how to grow salt crystals.

Show your kids the power of baking powder by conducting a simple experiment. Make four batches of cornbread, all identical except for one thing: baking powder!

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!

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

Roasting pumpkin seeds makes for a great Halloween activity, and a healthy snack!

This science project challenges students to study deer behavior in their natural habitat- the feeding patterns, social behaviors, male to female ratio, etc.

This science experiment has students test whether a snail moves faster on concrete or dirt.

Try the classic balloon-on-the-wall trick with your kid and watch static electricity in action.

This science fair project idea teaches how the gases and pollution in the air affect the earth's atmosphere temperature.

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.

This science fair project idea explores how enzyme inhibitors, active sites, non-competitive enzyme inhibitors, and substrates work.

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

The purpose of this study is to determine if people can tell the difference between organic and conventional food from looking at, smelling and tasting it.

Want to make Halloween truly eerie? Science to the rescue! These ghouly hands come alive with a little help from simple chemistry.