This science fair project focuses on the use of the enzyme amylase found in human saliva to break down starch into sugar.

Science fair project in which you will examine how crystals are formed by creating your own crystal using charcoal briquettes, salt, and ammonia.

Would your dog prefer homemade or store-bought food? Raw or cooked? Test your dog's preferred diet in this fun experiment.

In this fun science fair project idea learn about universal solvents and solutes and find out the solubility of several common liquid substances.

Science fair project in which you will attempt to throw a ball the greatest horizontal distance possible by using different angles.

In this free science fair project, learn how to separate salt from water using heat. A great science project for elementary school kids.

This science fair project idea examines whether the colors of the spectrum respond differently in the thermal aspect when radiated by the sun.

In this activity, your learner will be challenged to create their own tic-tac-toe grid out of building blocks.

Science fair project that teaches you about chemical indicators and how to make your own in order to identify various mystery solutions.

In this popcorn experiment, students can explore how two things made out of the same material can have very different appearances and densities.

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

Did you ever add salt to pasta? Did it help cook the pasta faster? If not, find out in this science fair project idea.

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

In this simple science project, learn about what causes dew and what affects dew formation with a drinking glass, ice, and a soda bottle.

In this fun project, use a memory game to test various age groups and determine whether aging directly affects short-term memory loss.

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

What animals are most popular? This project affords practice in data-collection, record-keeping and data-analysis through the investigation of this question.

In this fun science fair project, make two different scale models of our solar system using Astronomical Units and planets' relative size!

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

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

Check out this fun and easy 4th grade science fair project idea that tests how gravity induces positive and negative geotropism (gravitropism) in bean plants.

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

Total alkalinity and pH personal care products are controlled to prevent skin irritation. Learn more about basic and acidic substances in this science project.

Science fair project that examines albedo, and how this information is applied in the design of cars, sportswear, and other items. Which colors reflect light?

examine how passive solar heating works, measure temperature in a parked car on a sunny day. ways to use passive solar heating as an alternative, energy

Learn about the effect of artificial light on plant growth versus natural sunlight and delve into some biology and botany concepts in this science project.

Explore how dielectric heating comes into play when microwaving various liquids in this science project. This test will help you understand how microwaves work!

In this activity, children will work on their mathematics and engineering skills as they attempt to recreate the Eiffel Tower out of building blocks!

This science fair project idea highlights decomposition rates by comparing how long it takes an item to decompose in a compost pile vs. a landfill.

The objective of this science fair project is to study the photosynthesis process and demonstrate the important role that leaves play in the process.