3rd and 4th Grade Science Activities : Page 12

Marshmallows are made of sugar, water, and air pockets. Since the marshmallow is flexible, will air pressure cause it to expand when heated in a microwave?

Science fair project that examines the behavior of water and gravel in creek beds and the formation of sedimentary rocks.

Teach your child how butter is created by shaking up cream the old-fashioned way.

Grow a garden with an environmentally-friendly twist by using plant scraps that usually get thrown away.

Let your fabulous crafter use their favorite flowers, fruits and herbs to whip up a delicious perfume that they can proudly present to a friend or a loved one.

What is it about a Slinky that causes it to walk down the steps? This simple experiment is a perfect illustration of both gravity and momentum.

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

Discover whether different amounts of water added into a wine glass will produce a different pitch when their fingers are rubbed along the rim.

What keeps a an item cooler, polymer crystals or ice? Find out in this cool science experiment!

Science fair project idea that examines different physical characteristics of a chosen animal. Make educated guesses about evolution based on animal's form.

Make your own marshmallows and mix up some very interesting third grade chemistry lessons while you're at it!

Encourage a group of third graders to play this fun game of Whistle Hide-and-Seek as a warm-up to get them prepared for finding a "lost" camper.

Combine the science of physics with the fun of playing spy. Your young detective can make his own tiny looking glass. It's simple to make!

Science fair project that examines how winter storms form and the relationship between temperature, moisture and snow.

Check out this fun and easy 4th grade science fair project idea that tests how gravity induces positive and negative geotropism (gravitropism) in bean plants.

Create a brush pile to help wintering wildlife stay warm and cozy through the winter.

Make your own helicopter using a paper clip and a sheet of paper. Hold the spinner up in the air, let it go, and watch it spin gracefully to the ground.

Perk up your front porch with this hanging vase craft, perfect for spring and for getting kids outdoors!

Get this cool science fair idea to explore how arctic tundra animals change their behavior and adapt to survive in long, cold winters.

Discover whether the â5-second ruleâ is effective at determining whether food is still safe to eat after being dropped on the ground.

How would you dry your wet clothes if your dryer didn't work? Find out with this fun experiment!

This science fair project uses paper chromatography to investigate whether black, brown, orange, and purple are pure colors or mixtures of other colors.

This activity challenges students to use computational thinking as they create a sequence of commands that will make a robot move in a pattern related to the sound and rhythm of music.

Looking for an enjoyable evening activity you can do with your kids? Study the stars: help them learn about constellations by making one of their own.

Here is a hands-on activity to help third graders understand the four points of a compass...and how we use them to get around.

Do plants breathe? Not exactly. They do respire though! This activity will help your child with see that plants are producing the oxygen we need to survive.

This science fair project demonstrates the magic of arches by challenging students to stack telephone books on top of eggs without breaking them.

The objective of this science fair project is to examine the basic principles of air pressure using simple materials like a balloon, straw and string.

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

This science fair project on testing water hardness is a great introduction to practical chemistry. Test and learn the difference between hard and soft water.