Salmonella and E.coli are common food contaminates. This experiment measures the time it takes for E.coli and Salmonella to reach hazardous levels in fish.

Fudge is one of very few desserts people make at home that is actually crystalline. What happens when the fudge crystallizes at different temperatures?

Learn about calorimetry, make a bomb calorimeter, and experiment with combusting different nuts to see which one produces the most energy!

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.

Determine whether magic salt is more effective at melting snow than regular salt. Pour one ounce of salt over the ice cubes, compare the melt downs.

This measurement activity uses feet to compare objects, but not the ones found on rulers and measuring sticks...the feet on your child's own body!

Preschoolers are fascinated by how colors can be mixed to form new ones. This activity combines color mixing with the concept of melting for extra science fun.

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

Give your second grader a chance to get his feet wet with measurement before he moves onto the more complicated stuff by trying this activity with him at home.

This experiment uses a yeast solution, liquid detergent, and hydrogen peroxide to produce an exciting reaction like no other!

This science fair project idea researches how your choice of clothing affect how hot or cool you feel during the day.

The purpose of this science project is to determine which chemical best lowers the temperature of water in a cold pack and if the amount affects its use.

Science fair project that creates fog using bottles of hot and cold water.

Science fair project that cultivates slime mold and monitors the stages of its development.

This science fair project idea focuses on saturated and unsaturated lipids (fats and oils).

This science fair project will help learners determine whether algae can be made to grow by feeding it supplementary carbon dioxide.

This project examines the concentration of dissolved oxygen in water, with and without oil.

To help your child learn how to use a thermometer, try this temperature collecting activity at home.

Check out this cool middle school science fair project idea to determine if shopping carts are really carriers of harmful bacteria.

If your Father's Day festivities include meeting up with extended family, why not put all the dads to the test with a chili cook-off?

Making metric conversions is a difficult concept to master. Get in some extra practice by playing this Tic-Tac-Toe game with your learner.

Transform your kitchen table into a winter wonderland with a cookie and cocoa party that looks freshly dusted with snow.

How does bleach kill bacteria? Kids find out in this impressive bacteria science fair project by testing different concentrations on a safe strain of E. coli.

Add these fun chocolate Groundhog Day cupcakes to your holiday desert recipe repertoire! They're fun to make with your kids and a delicious winter snack.

Easy and cool middle school science fair project on ripening process of fruits and measures you can take to prevent fruits from rotting and delay ripening.

Make pickled carrots at home! Here's a fun activity to get your child in the kitchen and make something special with no fuss or muss.

Based on the concept of water's "freezing point," this activity entails the lowering of water's freezing point to chill ice cream!

Your third grader will be amazed at the explosive combination of vinegar and baking soda in these chocolate volcano cupcakes with white chocolate "lava."

Here is an activity that your kids can make for Mother's Day, a garden pot filled with edible "flowers".

In this science fair project, students examine how temperature affects sugar transport within a plant.