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Demonstrate how to tell the age of an egg without having to crack it open.

In this fun science fair project, make two different scale models of our solar system using Astronomical Units and planets' relative size!

This science project uses Mohsâ Hardness Test to show kids how to compare the hardness of different types of minerals.

In this science fair project, apply the principles of leverage and force by building six simple machines designed to set weights in motion.

Is cleaning with lemon effective? Get ready to give this science project some elbow grease and find out if acidic lemons can be used as a cleaning agent.

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

In this exciting and empowering challenge, your child will construct a bridge using marshmallows and toothpicks!

In this cool experiment, learn how to find specific gravity of minerals using liquids of different densities to see which substances and items sink and float.

In this science project, young children observe, record, and create collections of colors in their world and increase their powers of observation.

In this science fair project, young children observe, record, and create collections of shapes in their world and increase their powers of observation.

Sink or swim? Calculate the density of various fruits and vegetables using water and a kitchen scale.

How does frost form? How fast does it form? Do this simple science project using a plastic glass, rock salt and some water to learn about deposition.

In this experiment you explore how tectonic plates move to create land and expand bodies of water.

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

In this fun guessing game, your child uses his sense of smell and taste to figure out what is in the container. Here's how to play:

Science fair project examining barometric pressure, and how it can be used to predict the weather. How does atmospheric pressures relate to weather conditions?

In this windmill model science project, you will build a windmill to learn about wheel-and-axle machines and how these simple machines are used to do work.

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 science project challenges students to learn about and classify weeds and discover new practical uses for weeds.

The objective of this science fair project is to experiment with balancing everyday objects and observing the the effects of gravity on materials.

The goal of this science fair project is to discover the science behind carbonated soft drinks and apply this knowledge to create a new one.

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

Kids will learn how to show the direction of magnetic field lines and create a permanent model using iron filings in this great science fair project idea.

Discover whether different amounts of water added into a wine glass will produce a different pitch when their fingers are rubbed along the rim.

The goal of this science fair project is to analyze differences between the taste and texture of frozen and fresh food.

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

In this physics project, learn about the relationship between light intensity and distance using a laser pointer, flashlight, and graph paper!

In this design thinking activity, your child will choose an animal to research, learn about the animal’s habitat, and then replicate the animal's habitat using household items.

This project examines what types of objects burn and which burn faster and cleaner.

Science fair project idea examines validity of mood ring predictions. Analyze accuracy of results, consider the impact of temperature