2nd - 5th Grade Engineering and Science Inquiry Activities : Page 4

This science fair project idea develops an understanding through experimentation of which shapes are the most structurally strong.

These science fair experiments demonstrate the chemistry of rust and the oxidation process.

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

In this fun science project, learn about what happens to cut fruit and experiment with how to stop apples from turning brown.

This project determines whether Styrofoam, paper, or plastic cups are best for preventing ice from melting.

Find out whether packaged seeds actually do expire in this new science fair project idea.

In this science fair project, students make their own rain gauge to measure rainfall.

In this cool engineering science fair project, kids learn how to build Hero's engine: an enlightening example of Newton's third law.

This science fair project idea discovers if an artificial light source will yield the same plant health and growth rates as light from the sun.

Kids will make a beautiful rainbow in a jar and learn what enables different types of liquids to remain distinct in separate layers.

Learn about magnifying glasses, concave lenses and inverted images by sending rays of light through a magnifying glass in this cool science fair project!

In this science fair project, students discover how sedimentary layers form as sediments like mud, silt and sand settle over time.

How do series and parallel circuits work, and which produces the brightest light in a light bulb? Construct both in this project and find out!

How does a flashlight work? Kids will make a complete circuit and explore how voltage contributes to brightness with this science fair project idea.

In this CD hovercraft science project, students will construct their own DIY hovercraft.

Little scientists will make inferences about hearing loss, pitch, and frequency in this great science fair idea that puts the human ear to the test.

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.

What's the chemistry behind dyeing Easter eggs? Will adding vinegar to dye help the eggshell absorb the color? This colorful science project has the answers!

Does electricity move better through thick wires or thin ones? kids will conduct this classic electricity experiment for this science fair project.

Understanding absorption means understanding why certain fibers and materials can absorb water! Kids will see absorption in action in this simple project.

In this fun activity, your child will create their very own solar oven to bake s'mores!

Why doesn't the ocean freeze? Students answer this question by simulating the chemical composition and temperature of arctic waters in their own home.

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

Kids conduct a cool balloon rocket experiment in this fun science fair project idea. Does a greater volume of air mean a greater distance traveled?

The objective of this science fair project is to observe the differences in heat absorption for darker colors vs. lighter colors.

Do hand soaps and sanitizers prevent the growth of bread mold? If so, why? Kids will find out with this fun and informative science fair project idea.

How does a compass work? What's a magnetic field? Kids will build their own compass at home to find the answers in this great science fair project idea.

Science fair project which teaches you about the principles of physics within a vacuum by creating a vacuum chamber.

This project examines if computer screen and text color affect retention and if people subconsciously prefer combinations of colors that help their retention.

How can we describe the relationship of magnetic field strength vs. distance? Kids will find out with this free science fair project idea.