In this science fair experiment, high school students fit the growth pattern of bacteria to a mathematical model and predict future colony expansion.

Explore properties of liquids and how temperature and salinity effect surface tension of liquids in this fun- filled science fair project idea.

This fun science project helps to investigate how much water can a plant take up and release in a certain period of time through the process of transpiration.

Have fun with bubbles and find out why there are bubbles in your tap water in this cool science fair project idea.

Here's a fun math and science activity: help your child explore four different kinds of measurement, using their hand and a few simple household tools.

The purpose of this science project is to determine which chemical best lowers the temperature of water in a cold pack and if the amount affects its use.

This fun science fair project idea explains what a circadian rhythm is and explores the types of biological activities that follow a 24 hour cycle in mammals.

The objective of this science experiment is to evaluate the affects of high and low heat capacity on a material's heat retention ability.

This science fair project idea quantifies exactly how accurate the cricket thermometer is.

This science fair project idea determines whether land or water warms more quickly and investigates how solar radiation increases the temperature of surfaces.

This flexible activity for preschoolers features jellybeans, counting, coloring, and the five senses.

Formulate a hypothesis and use the scientific method to determine the guess what is hidden in a box. Test abilities of volunteers, without opening box.

Hone observational skills and introduce the basics of data interpretation with this data gathering activity all about the different colors people wear.

This science fair project idea focuses on saturated and unsaturated lipids (fats and oils).

This science fair project idea investigates food preference of birds.

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

Science fair project that tests how heat affects the chemical reaction between a seltzer tablet and a glass of water.

Most parents probably wouldn't mind subtracting 8-9 years off their age. Here's a fun third grade subtraction activity that may do just that.

Science fair project that determines the relationship between the temperature and the rate of cricket chirping. How many times do crickets chirp each minute?

In this activity, you child will learn about how heat changes food. On the next sunny day, head outdoors to make a treat in an outside oven! Here's how:

What is the coldest temperature possible? In this cool experiment, you'll calculate absolute zero by extrapolating data on the temperature and volume of gas.

In this activity, have your second grader practice measuring by finding the height, weight, and length of their most treasured toy!

Science fair project that tests the effects of temperature change on the reactivity of the catalase enzyme.

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

The purpose of this science project is to investigate which will grow larger plants: compost, soil and Miracle - Gro, a mixture of both.

This project examines the affect of temperature on viscosity and surface tension of different liquids.

This measurement activity uses feet to compare objects, but not the ones found on rulers and measuring sticks...the feet on your child's own body!

Check out this fun science fair project idea to explore fun facts about fruit juices and learn why do juices turn bad in the fridge.

A great science fair project on solar oven design that helps kids learn about solar power and solar heating.

Check out this fun science fair project idea to determine if the size of a particle affect the rate or speed of a chemical reaction.