4th - 6th Grade Engineering and Science Inquiry Activities : Page 3

In this microwave plant experiment, find out whether microwave radiation will affect radish seed germination. Will it help or hinder the plants' growth?

Check out this fun and easy science fair project idea on germination of a seed and learn to identify exterior and interior parts of a bean seed.

This science fair project idea explores the egg's thin membrane.

In this activity your child will create their very own marble maze!

This science fair project idea builds models of various types of bridges and then determines which bridge design is the strongest.

This project will explore whether test subjects, deprived of points of reference, will, in attempting to walk a straight course, walk in circles.

Kids build a desert food chain, desert food web, and desert food pyramid in this cool science fair project to learn about trophic levels and consumers.

Find out whether a longer airplane will fly farther or a wider paper airplane.

Learn all about balance and motion as your child designs a corn maze!

In this science fair project, learn how to make gears and find out why they transmit torques in predictable ways.

This science fair project idea investigates emulsifiers that allow oil and vinegar to mix.

The objective of this science fair project idea is to determine if sound travels best through the air, water or a solid.

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.

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.

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.

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

This project examines Newton's First and Second Laws of Motion with a bicycle and water balloons.

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!

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.

Science fair project the demonstrates Newton's Third Law using a milk carton filled with water.

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.

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