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.

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.

This science fair project idea tests the effect of heat- at varying temperatures- on the viability of biological enzymes.

How does bleach kill bacteria? Kids find out in this impressive bacteria science fair project by testing different concentrations on a safe strain of E. coli.

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

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

This project tests the hypothesis that dark colors absorb more heat than light colors.

This science fair project idea determines if a particular chemical has an effect (increase or decrease) on the heart rate of Daphnia.

This science fair project idea examines the actual cost of three household light bulbs by testing energy consumption.

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

This potato cannon activity teaches your middle schooler about the principle of Boyle's Law. Make a potato cannon and have a blast learning about science.

This experiment investigates if stress alters body temperature.

Science fair project that tests the correlation between outdoor temperature or weather conditions and the number of visible stars at night.

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

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.

This experiment evaluates if the temperature of the environment that you work in affects your ability to perform mental tasks.

This study observes plants, insects and an animal living in proximity to a known source of EMF.

In this science fair project, students examine how temperature affects sugar transport within a plant.

The objective of this science fair project is to examine the cleanliness of salad preparation techniques.

Help your child get comfortable with the concept of estimation, which will come in handy during everything from standardized tests to future shopping trips!

This experiment investigates if small changes in your diet can alter your basal body temperature.

This science fair project idea determines the way in which color affects memorization.

To help your child learn how to use a thermometer, try this temperature collecting activity at home.

Marshmallows are made of sugar, water, and air pockets. Since the marshmallow is flexible, will air pressure cause it to expand when heated in a microwave?

In this project students learn about the golden ratio and investigate if it can be used to predict people's assessment of beauty in others.

In this experiment you will become familiar with the properties of dry ice while creating interesting effects like ice bubbles!

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.

Can cells be frozen? This science fair project provides information to answer this question.

Compare air temperature with the infrared temperature from a reflecting surface at different times of the day, in shade and in sunlight.

The goal of this golf science fair science fair project is to determine whether the temperature of a golf ball affects its elasticity and its rebound.