4th - 7th Grade Science Activities : Page 3

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

This science fair project idea discovers which brand of bubblegum produces the largest bubbles.

Science fair project which determines if plants really do need water to grow, or whether they just need to be kept wet.

Roasting pumpkin seeds makes for a great Halloween activity, and a healthy snack!

In this project, you will observe and record changes in sunspots over two weeks.

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?

Learn how to make an anemometer with step-by-step instructions in this cool science fair project idea for 4th grade.

Kids will love making sugar crystals in this sugar crystal science fair project which teaches important chemistry concepts like saturation and solubility.

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

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!

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

Make some easy homemade yogurt with your young scientist, and see what a few 'live' bacteria can do in the right conditions!

This science fair project investigates whether tapping the top or the side of the can will stop a vigorously-shaken can of soda from exploding.

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

This science fair project idea determines what household items are good conductors of electricity.

This simple experiment serves as an introduction to the greenhouse effect.

Brine shrimp usually live in saltwater. Investigate how salt concentration (salinity) affects the rate at which brine shrimp eggs hatch.

Learn about the fruit fly life cycle in this experiment. Capture fruit flies to examine various stages of insect metamorphosis.

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

Learn whether Mylar Balloons last longer than Latex Balloons or vice versa.

This experiment will evaluate if chewing gum affects students' test performance.

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.

Discover that the absorbency of fabrics depend largely on the shape and structure of the individual fibers that make up the fabric.

How greasy are your potato chips? Students will use a reliable method to quantify greasiness and compare different brands in this great science fair project.

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

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

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.

It's not actually that hard to get energy from garbage! Kids learn how to make biogas in the form of methane with this cool and easy science fair project idea.

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