Does your child always demand to know why the sky is blue, how the sun moves across the sky, or where wind comes from?

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

Free science fair project idea that examines the differences between cats and dogs. Analyze objective qualities rather than subjective ones.

In this science fair project, students will use four different household objects to see which ones form the most or best crystals.

This activity provides a solution to all those leaves on your doorstep, while also giving your child a fun science lesson.

This crafty activity provides a hands-on way for your child to illustrate how the trees look during each season of the year.

Do heavier objects fall faster than lighter ones? Students learn the answer by watching the effect gravity in a vacuum has on a coin and a feather.

Look at people's face shape. Do you think their face shape affects your perception of kindness? Find out more in this science fair project idea!

Science fair project which will teach you more about the foods that you eat, and learn which ones are healthier choices.

Science fair project which compares the rate of temperature change and the maximum temperature as a result of the angle of light radiation.

The purpose of this project is to determine if there are fluctuations in the rising and the setting of the sun and the position of the earth as it rotates.

Explore this fun science fair project idea to investigate different microclimates in and around your home and their effects on the plant and animal life.

Watch pre-packaged seeds and seeds taken from inside fruits and vegetables grow. Which ones will grow faster? Read more in this science fair project idea.

This preschool activity uses paint chips to help your child learn about different shades of colors and how to find different colors in nature.

This experiment investigates whether left-handed test subjects have better memories than right-handed participants.

In this outdoor science activity you'll find tips on how to create a nature journal by choosing a native plant or animal and tracking that species.

Help your child make an attractive frozen holiday ornament to hang outside during winter months.

The goal of this evaporation experiment is to learn about how different external conditions affect drying time.

Why are some pennies shiny and others dark and dull? Find out with this cleaning copper coins experiment, which transforms dark pennies to bright ones.

Science fair project that determines whether landscaping fabric impacts the ability of plants to receive water.

You don't need to head to the Arctic to experiment with life in an igloo. Learners can build their own ice igloo at home from water and empty milk containers.

Here's a fun at-home activity that will help your child strengthen math skills using high and low temperature data, and become a master temperature tracker!

Science fair project that determines how UV radiation emitted by the sun varies depending on the time of day, using a handheld UV detector

Make homemade lemonade in a baggie with your preschooler with this fun and easy recipe.

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

What does a raindrop look like when it splashes on the ground? Is each raindrop unique like snowflakes? Find out how raindrop size varies in this experiment.

Make "fossils" with your child to hide in the sandbox or at the park or the beach, to help your child explore his archaeological side.

What's the relationship between temperature, air humidity and static electricity? Kids will find out with this free static electricity science fair project.

Science fair project which simulates the global conveyor belts on a small scale, and observes the effects of wind, density and temperature on water movement.