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In this design challenge, your child will make a bottle rocket using typical household items.

This science fair project idea explores which fruit molds the fastest.

What is persistence of vision? With this hands-on science fair project idea, students will demonstrate this cool and dramatic phenomenon in their own classroom.

In this project students experiment with making music using only glasses of water.

It's rhyme time! With this science fair project idea, your child will find out which words can be considered easy rhyming words, and why.

This science fair project idea recreates the movement of planetary bodies in order to learn why they sometimes appear to move backwards.

This science experiment tests if dog saliva can really help heal wounds.

The objective of this science fair project is to study the photosynthesis process and demonstrate the important role that leaves play in the process.

Learn about the layers of the Earth and make a model! Create a earth layer book, cake, or clay diagram.

What causes the seasons to change? Kids find out by modeling the earth's tilt using a globe, flashlight and graph paper in this cool science fair project idea.

What are buttress roots? In this fun science project, make a model of a rainforest tree and learn how they help trees survive in the tropical rainforest!

Learn about savanna flora and fauna in this science project! Take a look at characteristics of tropical grassland plants and animals that help them survive.

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

Construct batteries that make electricity from fruits with this fun science fair project.

Use pepper and soap to discover some fun facts about the properties of water.

Science fair project that examines how temperature affects density and how density in turn affects the behavior of helium gas.

This science fair project on testing water hardness is a great introduction to practical chemistry. Test and learn the difference between hard and soft water.

Young scientists will investigate people's preferences for saltiness, and make some inferences about genetics and diet.

By incorporating natural materials and the powers of observation, your child will become a backyard naturalist while building early writing and drawing skills!

This experiment has students record rat behavior to learn about the benefits of rats and research rat myths throughout history.

Help your child explore chromatography, which is the process of separating colors or pigments, and create a neat art project in the process!

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

The purpose of this science fair project is to explore whether UV light passes through some colors and not others by looking at blue, red, purple, and clear.

What causes dilated pupils? Young scientists will find out by applying what they already know about changes in pupil size and making models of the pupil.

This science fair project idea compares biodiversity between drops of water.

Find out whether matte or shiny nail polish lasts longer.

This science fair project investigates why the number of visible stars changes from place to place.

What do worms eat? Kids find out what kinds of rotting leaves and vegetables worms prefer in this cool compost science fair project.

Science fair project in which you will examine how crystals are formed by creating your own crystal using charcoal briquettes, salt, and ammonia.