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

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.

Want a fun way to teach your kid to tell time? Making a plate clock is a great way for him to learn how to tell time in a way he'll actually find exciting.

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

What keeps a an item cooler, polymer crystals or ice? Find out in this cool science experiment!

Determine which environment keeps an ice cube frozen for the longest duration. Inspect and record your observations when cubes melt.

Your child can turn cookie dough into a big pile of colorful painted fall leaves ready for eating!

Science fair project that uses distillation to convert salt water into fresh water.

Topped with roasted pumpkin, prosciutto, herbs, and feta, these pita pizzas are a healthy, seasonal alternative to your classic pie.

This science fair project explores different types of endangered frogs, and why some are endangered while others are not.

Check out this cool science fair project idea to explore non-chemical means of preserving fruits by using thermotherapy.

Demonstrate the capillary function in plants by adding food coloring to glasses of water. Slice stalks of celery and leafy tops. Compare color of leaves

Ethanol can be used as an alternative fuel! The purpose of this experiment is to identify a starch plant that produces the largest quantity of ethanol.

This experiment will evaluate bacterial content on toothbrushes before and after different cleaning methods to determine which method of disinfecting is best.

In this science fair project, we learn how air molecules move as a result of density, convection, and air currents.

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?

This science fair project idea measures physical dexterity as a function of temperature.

Can cells be frozen? This science fair project provides information to answer this question.

The objective of this science project is to determine the relationship between carbon dioxide gas and the temperature of the atmosphere.

The objective of this science project is to examine the factors that affect the dispersion of oil in water, including water agitation.

Have fun with bubbles and find out why there are bubbles in your tap water in this cool 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.

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.

Bake some cookies with an oven that collects sunlight and traps the shorter wavelengths (heat!).

This science fair project idea examines reptile behavior and to determine whether reptiles are more active during warmer temperatures.

Look for a correlation between temperature and the intensity of cricket chirping. Measure ambient temperature and sound intensity in decibels.

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

Learn how to make a hygrometer to measure relative humidity in this project. Make a sling psychrometer hygrometer with gauze, thermometers, and a bottle.

When you rub a balloon on your head, your hair stands up; but is that true for everyone? Does hair color affect static electricity?

Read on this high school science fair project idea to get basic information on the process of heat transfer and the conditions under which the transfer occurs.