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Check out this fun science project idea to measure the amount of vitamin C in ripe, half-ripe, unripe and stored oranges.

This science project teaches students the relationship between compost and plant growth. Students conduct an experiment with different types of compost.

Create your own light bulb and test filaments of different thicknesses to see which keeps the bulb burning for the longest time.

This science project examines the effectiveness of various types of laundry detergents on stains trapped on a white handkerchief.

This middle school science fair project determines whether DNA is most easily extracted from under-ripe, ripe, or over-ripe strawberries.

The project compares three different methods of testing turbidity in water: the secchi disk, spectrophotometer, and turbidity test kit.

Kids learn about potential energy, and mechanical energy, and how to make power from water with one of our favorite renewable energy projects for kids.

Determine how salinity affects the circulation of warm and cold water. Note whether the warm water mixes or forms a layer with cold water.

This science experiment examines the role of fat in food, especially in making bread rise and whipping cream.

This experiment will examine and precisely measure the amount of sugar in various sodas.

The objective of this science project is to examine the factors that affect the dispersion of oil in water, including water agitation.

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

In this science fair project, students will use methylene blue to study the presence of aerobic bacteria in milk.

Free science fair project idea that examines the impact of gravity on a dropped carton of eggs. Design a device to protect the eggs from cracking.

In this project, learn about animal vision and different kinds of eyes: ocelli, compound eyes, and camera eyes. Find out what a jellyfish or grasshopper sees!

Science fair project which measures whether tsunamis are more destructive when they are caused by an earthquake or by a meteor.

Think about the adaptive utility of an important aspect of our physiology.

Science fair project which uses coins flips to visually demonstrate the probability of an event and how to express it.

This science fair project idea examines which type of insulation holds in the most heat.

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

Learn how to make a periscope with this cool engineering science fair project idea, and learn about optics to learn how a periscope works.

Use a dichotomous key to identify plants or animals.

Science fair project that uses distillation to convert salt water into fresh water.

The goal of this science fair project is to determine which cheese grows mold the fastest: Vermont Cheddar, American, Brie, or Camembert?

Determine which video game elevates the heart rate best and burns the most calories.

This science fair project idea investigates if webbed feet help a duck (and others) swim.

Make a periscope with milk cartons and mirrors! This preschool activity is great for playing secret agent and learning simple physics.

This science fair project idea will be examining oxidation and acid rain

This science fair project idea quantifies the effect of weather- in this case temperature and humidity- on musical instruments.