In this cool project, create a lighted, scale model of the different layers of the Sun, including the core, radiation and convection zones, and photosphere.

Study the impact of environment on seed germination among three materials: soil, paper towel, and cloth. Note when seeds germinate and how well they germinate

Did you ever drink spoiled milk? Find out whether whole milk spoils at the same rate as 2% and skim milk.

Test products which claim to reduce wrinkles, and determine which is the most effective. Test effectiveness over three weeks, using a sample of volunteers.

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

Store seeds under three different environmental conditions. Plant seeds in carefully marked groups, watch them grow. Compare results.

Determine whether a hot liquid cools off faster when liquid is added before or after a two minute wait.

Let your preschooler create something cute while making something delicious to eat: create bread sculptures, or shapes of bread dough!

This science fair project determines what effect substances have on ice, and which of these products most effectively melts ice.

The garden is the perfect place to practice math and science with preschoolers. Get digging (and counting, sorting, observing at the same time!)

Add these fun chocolate Groundhog Day cupcakes to your holiday desert recipe repertoire! They're fun to make with your kids and a delicious winter snack.

Determine which seeds are most likely to survive harsh winter conditions (low temperatures).

Have your child observe, measure and record the amount of space objects occupy, and you'll have an inside space explorer on your hands in no time!

If you're looking for a fun way to have your child gain practice pattern-making while working out fine motor skills, making Washi eggs is the perfect activity.

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

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

Determine whether magic salt is more effective at melting snow than regular salt. Pour one ounce of salt over the ice cubes, compare the melt downs.

Most people assume that cold water freezes more quickly, but could that be false? Does hot water freeze faster than cold water? Let's find out!

This experiment works due to a simple principle: plants need light. Build a shoebox maze and watch the plant work though the obstacle course, searching for sun.

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

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

A project to reinforce learning about the layers of the rainforest, rain forest ecosystem, and the greenhouse effect.

Invite your second grader to help you measure and mix these fresh, cool concoctions!

This science fair project idea investigates food preference of birds.

Work on measurement by sliding cards along a table with your second grader in this fun game. Use centimeters or inches, add up your totals, and see who's won!

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.

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

Challenge your preschooler to a game of shape match-up--an entertaining way to boost her observational ability.

Discover if temperature settings in a fridge make a drastic difference in terms of bacterial growth.