3rd - 7th Grade Science Activities : Page 20

This science project allows students to study the psychology of happiness.

The objective of this science fair project is to analyze the effects of salinity and temperature on water.

Learn about the microclimate of your backyard by tracking rainfall, temperature, and observed weather with hand drawn charts and graphs.

Hatch a praying mantis egg case in a homemade habitat with your child's help! This is an amazing experiment in science and nature for kids of any age.

Help your child get to know the least-appreciated of the five senses, the sense of smell, with a smelling station.

The rock cycle will come alive for your child when he uses broken crayons to create the three basic rock types.

Celebrate April Fools' Day with a science prank that is sure to amuse...and educate too!

Does skin thickness really decrease fruit spoilage? Find out in this science fair project idea!

Which do you prefer: real or artificial? Try this sweet little taste experiment to help your kids develop a better awareness of the food they consume.

This Valentine's Day, pair up science and crafting with this simple crystal formation project that's sure to bring a little love into your home.

By using static electricity generated from their body, a child can cause a small fluorescent lamp bulb to light up!

Discover how to make fake snot with this cool science fair project idea to learn about polymers, enzymes, and more.

Gather some friends for a bubbly soda taste test do determine calories' role in your favorite drinks.

Your third grader will delight in learning about sound waves as he observes the different sounds created by tapping on glasses with varying amounts of water.

This craft is a great way to explore the fascinating world of spiders and their webs as you collect spider webs from around your house with your third grader.

Your kid will delight in creating an extraterrestrial vehicle from goods found around the house. There's no telling where her imagination will go!

Your child will create her own falling snowflakes using white paper and glue them over a tree, so it appears as if they are falling from the sky.

Help your fifth grader embrace the roots--literally--of Mother's Day by growing carnations to honor mothers in you family's history.

Stir up some enthusiasm for experimentation with this candy-cracking science experiment!

This science fair project idea studies which kind of rock (sedimentary, igneous, or metamorphic) is most damaged by frozen water.

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

Household items and a bit of imagination will create a CSI kit for your child to have investigative adventures with. Explore the world of forensic science!

This science experiment has students test whether a snail moves faster on concrete or dirt.

examine how passive solar heating works, measure temperature in a parked car on a sunny day. ways to use passive solar heating as an alternative, energy

Check out this science project idea to compare organic produce to non-organic produce and how preservatives in food extend the shelf life of goods.

Explore aromas with your child and help boost her brain power with some fun and interactive science activities.

This science fair project idea explores how far the âdanger zoneâ is from different types of caution signs.

Construct and experiment with a periscope using reflected light rays to gather an image.

How does distance affect the spreading of light? Kids see diffraction and the inverse square law of light in action with this great science fair project idea.

Has your child ever asked you how a submarine works? Here's a simple bathtub project that will make for a hands-on answer.