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

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.

In science fair projects, middle school students discover why nitrogen fixing bacteria are important to plant growth.

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

How do the phases of the Moon and gravity cause spring tides and neap tides? Does the Sun play a role in the tides? Figure it out in this fun science project!

Does putting soapy water on plants help or hinder plant growth? Kids learn about greywater and how it affects plant growth in this cool science fair project.

In this science experiment, do tensile strength test on fishing line, a strand of hair, a rubber band, and any other materials you're curious about!

What are the effects of colored light on plant growth? Explore plant behavior in this cool botany science fair project and learn about phototropism!

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

In this challenge, students are tasked with creating a model roller coaster that a marble can travel through.

Kids learn how to manipulate additive and subtractive colors to send secret messages with red colored filters in this cool science fair project idea.

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 measures out the sugar of various foods and find out whether people can correctly determine how much sugar is in common foods.

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

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

Can a toy car determine the strength of a magnet? In this cool magnet science fair project, young scientists will learn how to measure the strength of a magnet.

This science fair project idea explores whether talking to a plant will help it grow.

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!

What's the relationship between temperature, air humidity and static electricity? Kids will find out with this free static electricity science fair project.

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

In this cool science fair project idea, kids conduct the ruler drop test on volunteers to determine whether reaction time can be improved with practice.

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

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.

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

Students will investigate the thermal conductivity of metals by learning how to measure thermal conductivity with this fun and easy science fair project idea.

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

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.

Learn about where colors come from and how light absorption works in this fun experiment! All you need is a flashlight, construction paper, and cellophane!

Check out this cool science fair project on identifying rocks and minerals for kids.

This science fair project idea determines if the color of light affects the growth of plants.

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.