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

Air invisible; it doesn't make sounds; you can't pick it up and throw it. So how do we know it exists? Help your second grade scientist figure it out.

This activity works well with a group or just with a parent and child, and it can make a great party game since it's both fun and inexpensive.

Observe with your third grader what happens when food starts to decompose, and boost science skills simultaneously with this experiment!

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

Have your child build a model of a coral polyp, one of the tiny animals that composes a coral reef.

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.

This science fair project idea investigates if fats add to the flavor of food.

Your child might have noticed how bubbles quickly lose their colors and pop. Check out this creative way to make those bubbles last longer.

Science fair project which determines whether the size or the thickness of a piece of paper has an effect on how many times it can be folded in half.

Learn about different fern fronds with your third grader as you create lacy, natural decorations on your Easter eggs this year.

It's food. It's Thanksgiving tradition. And guess what: Cranberry Sauce is also science! Try our simple recipe/experiment.

This science fair project idea demonstrates that plants give off water.

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

Learning about how plants grow is a building block in the early grades science curriculum. Put a fun twist on this life science concept with these cup monster friends!

Amaze your kids by separating a salt and pepper mixture using an "electric spoon" charged with wool.

Science fair project that examines how yeast grows, and which conditions allow for optimal growth. What types of nutrients does yeast prefer?

In this project, you'll build a model of the earth, complete with all seven continents and four major oceans.

Take this "paper plate snack test" with your child for a hands-on lesson in making healthier choices to teach your child about what's in his food.

This science fair project idea measures out the sugar of various foods and find out whether people can correctly determine how much sugar is in common foods.

Have your child build his own mini waterfall, and help him develop his planning, problem solving, and architectural skills.

Is it magic? No...it's the amazing, gravity-defying capillary action experiment! Kids will love this dramatic and enlightening science fair project.

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.

In this project combining nature, art, math, and science, children make rubbings of leaves then observe shapes and structures and sort the leaf images.

This science fair project idea explores substances that cause a bubble to last longer.

In this air pressure science experiment with a balloon and a jar, children will use heat to create a partial vacuum and suck a balloon into a jar.

In this experiment, students will discover how heat and pressure turn clay into slate, phyllite, and finally schist.

In this fun experiment, learn about brand awareness and the influence of media on children by testing logo recognition in different age groups.

In this science fair project, kids start a chemical reaction that will make a balloon inflate itself!

Would your child like to learn about a hidden world? All she needs to do is open her box of markers!