This fun activity encourages your child to develop their skills in not only taking measurements, but also in working with the measurements themselves.

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

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 which measures the amount of heat energy released by a burning candle by calculating how many calories of heat it emits.

This do-it-anywhere guessing game helps reinforce number concepts. And it's a blast to play.

This experiment investigates if stress alters body temperature.

Give your second grader a chance to get his feet wet with measurement before he moves onto the more complicated stuff by trying this activity with him at home.

These delicious Easter Basket Cupcakes are a simple, creative holiday treat. These cupcakes sit in waffle bowls with festive coconut grass and jellybean eggs.

This experiment will evaluate bacterial content on toothbrushes before and after different cleaning methods to determine which method of disinfecting is best.

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

Determine the differences between various bicep exercises, both in terms of how much muscle exertion they create and how they affect your heart rate.

Dig up some dinos while promoting curiosity and sensory skills in this hands-on activity that will have your child searching for prehistoric treasure!

This science fair project will help learners determine whether algae can be made to grow by feeding it supplementary carbon dioxide.

In this science experiment, observe convection currents forming and learn about how heat energy moves in liquids from hot to cooler areas through convection.

Making metric conversions is a difficult concept to master. Get in some extra practice by playing this Tic-Tac-Toe game with your learner.

Explore joule heating and resistance vs. temperature with this cool electricity science fair project that gets kids melting ice cubes with resistors.

The objective of this project is to examine the ways in which a passive solar house may contribute to conservation of energy.

Determine if âdouble dippingâ chips really spreads more germs than dipping only once per chip.

Help your kids fall in love with nature by making a simple clay bird bath. Set it up in your yard and watch the animals venture in for a sip of water.

Determine the relationship between the speed of a sound and the temperature of the air it passes through.

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

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

Transform your kitchen table into a winter wonderland with a cookie and cocoa party that looks freshly dusted with snow.

Learn about calorimetry, make a bomb calorimeter, and experiment with combusting different nuts to see which one produces the most energy!

Determine which metal has the highest rate of conductivity.

Practice conversions within the metric system in this fun math card game for third graders.

This science fair project idea measures physical dexterity as a function of temperature.

Look for a correlation between temperature and the intensity of cricket chirping. Measure ambient temperature and sound intensity in decibels.

Do your laundry and your science project simultaneously! This science fair project investigates whether the color of a garment affects the time needed to dry.

Check out this cool science fair project idea to explore non-chemical means of preserving fruits by using thermotherapy.