Encourage your child to compare and contrast a wide variety of autumn-themed items by weighing various objects and recording their findings.

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.

Determine whether fresh vegetables have more calories or less calories than canned vegetables.

Will your liquid weigh less once you remove the fat from it? Find out in this science fair project idea.

In this cool experiment, learn about the forces of resistance in a liquid and race marbles in a cylinder to find out which fluids have a high viscosity.

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

This first grade science activity is great for winter! Your child will grow and observe her own amaryllis bulb, keeping a journal of her scientific findings.

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

This cool science fair project teaches kids about temperature, density and buoyancy using balloons that float with normal air. No helium required!

Science fair project that examines how temperature affects density and how density in turn affects the behavior of helium gas.

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

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

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

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

In this science fair project, we learn how air molecules move as a result of density, convection, and air currents.

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

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.

This hands-on activity gives your child an opportunity to apply various strategies to solve a problem and to check if his answer makes sense.

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

Check out this fun science project idea to explore different types of starches and learn how removing starch affects the quality and taste of food.

Learn how starch and carbohydrates interact with different solvents in this fun and easy packing peanut science fair project.

A fun activity for a hot day, this will give young kids a chance to experiment with beginning science and math â and splash around in the process!

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.

Check out this cool science fair project idea to explore the relation between onions and eyes and how to prevent eyes from tearing while cutting an onion.

This experiment investigates if stress alters body temperature.

This science fair project idea determines which flower lasts the longest.

Why do plants wilt? Kids will learn to think critically about what environmental factors affect plants, and what plants need to survive.

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.

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!

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