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

Do you think heat can affect a plant's growth rate?

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

Science fair project that tests how heat affects the chemical reaction between a seltzer tablet and a glass of water.

Free science fair project idea that examines air pollution in local environments. Particles are trapped by petroleum jelly on microscope slides.

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

Use an Elihu Thomson apparatus, also known as a ring launcher, to learn about electromagnetism concepts and the properties of various metals.

This science fair project idea determines which flower lasts the longest.

Kids will learn about insulation, heat conduction, and the economic benefits of energy efficient windows in this cool science fair project.

Check out this fun science fair project idea to determine if the size of a particle affect the rate or speed of a chemical reaction.

This science fair project idea determines what factors influence an individual's reaction time using a web-based timed reaction test.

This fall, bake some festive caramel apple cupcakes with your second grader and help her build her math skills while you're at it!

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.

Kids will build a turtle habitat in order to observe the climate preferences of this cold-blooded reptile.

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

In this science fair project, students will use methylene blue to study the presence of aerobic bacteria in milk.

This first grade science activity is great for winter! Your child will grow and observe her own amaryllis bulb, keeping a journal of her scientific findings.

These delicious Easter Basket Cupcakes are a simple, creative holiday treat. These cupcakes sit in waffle bowls with festive coconut grass and jellybean eggs.

These handmade Christmas treat cups are perfect for house parties, school celebrations, and holiday bake sales.

The next time you've got a restless second grade earth scientist on your hands, use this experiment to demonstrate crystals and make a tasty treat, too!

Which public places harbor the most bacteria and germs? Test different environments to find out where the most bacteria live in this science project.

Explore the wattage of microwaves in relevance to cooking time.

The objective of this project is to examine the ways in which a passive solar house may contribute to conservation of energy.

The objective of this experiment is to evaluate the effects of acid rain on plants.

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

Measure temperature change over time using a variety of insulation materials. Be creative with insulation materials: scarves, yarn, socks, feathers, oil, etc

Did you ever drink spoiled milk? Find out whether whole milk spoils at the same rate as 2% and skim milk.

If you love the idea of handing out holiday tins of homemade cookies but you're not a baker, chocolate-covered apples are the perfect solution.

This science fair project teaches you about what makes persimmons so tart and how astringency can be removed by studying the effect of tannins on fruit.