Kids often ask, "how tall am I?" This science fair project seeks to determine how well kids can guess their own heights.

Learn how to grow an avocado plant indoors with your 1st grader in this hands-on gardening activity.

Conduct a simple experiment with your child to study how dirt tracks change as they age in this 1st grade science activity.

Check out this fun science fair project idea for 1st grade: a solar eclipse model that demonstrates total, partial, and annular solar eclipses.

Your 1st grade scientist will improve her observation skills as she's encouraged to eat healthy by comparing the dry and fresh fruit in this experiment.

Forget store-bought dyes this Easter: color your Easter eggs with natural dyes made with ingredients from your own kitchen in this 1st grade activity.

Check out this silly game that will put your kid's animal habitat knowledge (and acting skills) to the test.

In this simple and social activity, children use size comparison skills to find objects in nature that are bigger, smaller, longer, and shorter.

The objective of this science project was to build a model of a volcano and observe reaction between different substances, including baking soda and vinegar.

This engaging project encourages young children to practice and refine the important scientific skills of sorting and classification.

This fun experiment provides a concrete and visually striking illustration of photosynthesis.

The objective of this science project is to determine the length of time for different seeds to germinate.

This project leads to an understanding that a whole may be built of smaller parts that fit and work together and provides an introduction to basic tools.

This activity allows your kindergartener to translate what they observe into a beautiful poem.

Find out whether we can create motion in a dish and as a result, create a wonderful and colorful show.

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

In this science fair project, young children discover what happens when two fluids that have different densities get together.

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

Study the life cycle of the common blowfly as it relates to forensic investigation. Record the first time you see flies, maggots, and eggs.

In this project children discover, identify, and sort seeds from a variety of fruits and vegetables

This project explores whether plants can live and grow when "watered" with juice, soda, or milk.

This project examines whether people's taste perception is influenced by what they see.

Explore the scientific concept of capacity by seeing how many pennies you boat can hold before it sinks!

In this project children practice the scientific method while playing with puffy paint.

This science fair project idea investigates which objects float and sink in honey, water, and oil.

This science fair project idea investigates if webbed feet help a duck (and others) swim.

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

This project is a vivid, concrete introduction to the basic but important idea that plants need sunlight and water to grow.

This science fair project idea explores how length affects the weight a bridge can hold.

This science fair project idea determines which method of hand cleansing is the most effective.