3rd and 4th Grade Science Activities : Page 2

This science fair project investigates whether tapping the top or the side of the can will stop a vigorously-shaken can of soda from exploding.

This science fair project idea discovers which brand of bubblegum produces the largest bubbles.

Help your fifth grader execute this experiment involving a lit candle (submerged in water!) to show him the wonders of heat energy transference.

Roasting pumpkin seeds makes for a great Halloween activity, and a healthy snack!

In this cool science fair project idea, kids conduct the ruler drop test on volunteers to determine whether reaction time can be improved with practice.

How greasy are your potato chips? Students will use a reliable method to quantify greasiness and compare different brands in this great science fair project.

Find out whether packaged seeds actually do expire in this new science fair project idea.

This science fair project idea explores whether talking to a plant will help it grow.

Take a dive into the candy jar with this yummy science experiment.

Create a self-portrait from natural materials in this collage craft activity!

Kids build a desert food chain, desert food web, and desert food pyramid in this cool science fair project to learn about trophic levels and consumers.

This project examines whether people's taste perception is influenced by what they see.

Can a toy car determine the strength of a magnet? In this cool magnet science fair project, young scientists will learn how to measure the strength of a magnet.

This science fair project idea creates a sedimentary rock and to investigate what takes place during the rock cycle.

What's the chemistry behind dyeing Easter eggs? Will adding vinegar to dye help the eggshell absorb the color? This colorful science project has the answers!

How does rust form? Kids will learn about the roles oxygen, water, and electrons play in rust chemistry in this cool science fair project idea.

This taste buds science experiment demonstrates how strongly our sense of smell controls what we taste.

Science fair project which determines if plants really do need water to grow, or whether they just need to be kept wet.

This science fair project idea investigates which objects float and sink in honey, water, and oil.

How do you tell time without a watch? Use the sun! This simple activity will show your child how to build his own sundial.

Take advantage of the spring and summer sun in this arts and crafts activity that has your learner creating pretty flower prints.

In this free science fair project, learn how to separate salt from water using heat. A great science project for elementary school kids.

In this fun science project, learn about what happens to cut fruit and experiment with how to stop apples from turning brown.

How does a compass work? What's a magnetic field? Kids will build their own compass at home to find the answers in this great science fair project idea.

How does smell affect taste? Ready your taste buds--in this project, you'll gather some test subjects and do a taste test to see how much smell affects taste.

This science fair project idea investigates emulsifiers that allow oil and vinegar to mix.

This science fair project idea develops an understanding through experimentation of which shapes are the most structurally strong.

Try this simple activity with your child to guesstimate the age of a tree in your yard and nurture her developing math skills while you're at it!

The objective of this science fair project idea is to determine if sound travels best through the air, water or a solid.

Set your young chemist up for an afternoon of science-fueled magic with a deceptively simple activity starring baking soda and vinegar!