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This science fair project idea investigates the hardness property of minerals.

Study the life cycle of the common blowfly as it relates to forensic investigation. Record the first time you see flies, maggots, and eggs.

In this science fair projects, students will grow out the bacteria that collect on air conditioner filters.

This science project lets students explore the number of spots on a ladybird and how to treat ladybugs with respect.

This science fair project idea investigates the difference in reaction times between boys and girls.

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.

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

This science fair project teaches students the differences between fruits and vegetables.

Science fair project which tests various sedimentary, igneous and metamorphic rocks to find out whether one rock family is stronger than the others.

Find out which type of sponge holds the most water.

This experiment has students record rat behavior to learn about the benefits of rats and research rat myths throughout history.

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.

Science fair project that examines how yeast grows, and which conditions allow for optimal growth. What types of nutrients does yeast prefer?

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

Science fair project that compares the ecology of different soil samples by identifying which sample has the most invertebrates living in it.

This science fair project idea examines the reason boats are shaped and engineered.

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

This science project allows students to study the psychology of happiness.

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

This science fair project idea explores plant growth from a bulb, root, and a stem and investigates asexual plant reproduction.

This science fair idea examines hydrogel superabsorbent polymer crystals. They can absorb 500 times their weight in water. Can they absorb other liquids too?

This science experiment has students test whether a snail moves faster on concrete or dirt.

Learn how to make a hygrometer to measure relative humidity in this project. Make a sling psychrometer hygrometer with gauze, thermometers, and a bottle.

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 do ants eat? Kids find out by observing a colony of ants in this cool zoology science fair project for 4th grade.

Handedness and footedness refer to whether people prefer to use their left or right hand and foot. In this experiment, test hand and foot dominance.

This science fair project idea explores how length affects the weight a bridge can hold.

There are many benefits to bugs and insects. This science project shows how cockroaches, termites, and other critters benefit our planet.

Create a DIY Electromagnet! Using a 9v battery to create an electrical field around a nail, students explore electromagnetism in this cool science project idea.

Here is a fun middle school science project on factors affecting solubility. Learn how dissolved solids can "crash out" to form crystals when conditions change.