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

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

This project demonstrates the correspondence between the volume of water displaced by a submerged object and the volume of the object displacing it.

Ant behavior is closely related to light intensity. This free science fair project idea examines how fast ants dig when they are exposed to to light and dark.

The objective of this science fair project is to set up a compost bin to convert food scraps and organic waste.

In this fun experiment, learn about brand awareness and the influence of media on children by testing logo recognition in different age groups.

Science fair project that compares the freezing temperature of salt water and freshwater in order to learn about supercooling and condensation nuclei.

This science fair project idea investigates how optical distances change the apparent size of an object as seen through a magnifying lens.

This science fair project idea recreates the movement of planetary bodies in order to learn why they sometimes appear to move backwards.

This science fair project examines which fruits and/or vegetables will ripen prematurely when placed with ripe apples.

In this design challenge, your child will create a parachute for a small toy using typical household items.

Experiment about connection of senses of taste and smell. Using blindfold and noseplugs, administer blind taste test. Analyze results and organize data.

Find out whether putting something on top of a plant will inhibit its growth.

Is horse manure a possible energy source in a crisis? Use calorimetry to find out how much energy horse manure can produce in this science fair project.

Science fair project that determines whether landscaping fabric impacts the ability of plants to receive water.

Kids will conduct a cool limewater carbon dioxide test that can be performed with common household materials to learn about the chemistry of this common gas.

This science fair project idea explores whether mint, known for its âcooling sensationâ really does lower temperatures.

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

Learn the basic structure of a DNA strand, which is the double helix, how genes form together, and the resemblance DNA has to a twisted ladder. Create a model.

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

This science fair project idea investigates if heat from direct sunlight is hotter than heat from reflected sunlight.

The purpose of this study is to determine if people can tell the difference between organic and conventional food from looking at, smelling and tasting it.

This science fair project explains the process of how the lungs expand and contract with the help of the diaphragm.

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

Science fair project that examines how to grow bacteria in a controlled setting, using simple materials from around the home.

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 windmill model science project, you will build a windmill to learn about wheel-and-axle machines and how these simple machines are used to do work.

In this open-ended activity, students will be given a small quantity of three types of materials and asked to design a prototype for “something that will improve the school.”

Do lefties just write different or are their brains different? This science project has students explore what it means to be left handed.

Learn all about balance and motion as your child designs a corn maze!