Explore if planting seeds in a certain direction will affect how fast it germinates.

In this science fair project, students learn how pressure can make the minerals in a rock line up in the same direction and form bands and foliation.

Does the temperature of a magnet affect its strength? Learn about the relationship between magnets and temperature with this cool physics science fair project.

In this cool engineering science fair project, kids learn how to build Hero's engine: an enlightening example of Newton's third law.

Explore how sound waves are reflected and absorbed by producing echoes. Analyze which locations produce echoes.

Demonstrate how you can make your own compass using a magnetized needle. It also allows you to compare magnetic north and geographic north.

Learn how to make a weathervane with this fun and simple meteorology project for fourth graders.

Create a DIY Electromagnet! Using a 9v battery to create an electrical field around a nail, students explore electromagnetism in this cool science project idea.

Learn how to demagnetize a magnet and how physics can explain this phenomenon with this enlightening science fair project.

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

Want to see a great example of Newton's first law? Kids will learn about basic physics with this fun, ballistic experiment.

Learn how to make an anemometer with step-by-step instructions in this cool science fair project idea for 4th grade.

This science fair project idea examines whether plants are still able to grow normally if they are turned upside-down.

In this science fair project, students use the streak test to tell minerals apart from each other.

Kids will learn how to make a steam powered rocket boat, also called a putt putt boat or a pop pop boat, in this great science fair project for 4th graders.

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.

This simple "how to make a water wheel" activity makes physics come alive for your child by demonstrating how different kinds of energy work.

Would it hurt to skip brushing your teeth just this once? Let's find out by seeing which foods produce the most mouth bacteria.

This science project uses Mohsâ Hardness Test to show kids how to compare the hardness of different types of minerals.

This science project lets students explore the number of spots on a ladybird and how to treat ladybugs with respect.

How sensitive is your skin? Here's a fourth grade science experiment that lets your child figure it out.

In this popcorn experiment, students can explore how two things made out of the same material can have very different appearances and densities.

Along with being an interesting science activity, dehydrated strawberries are also tasty â and healthy!

Make a planter full of delicious seasonings and classic grilling vegetables, great for a Fatherâs Day gift or a fun start-of-summer outdoor activity.

This science fair project idea identifies clouds as a means of predicting the weather.

Kids explore how a single movable pulley can confer a mechanical advantage over a fixed pulley in this cool engineering science fair project for 2nd grade.

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.

What's the difference between a microwave and an oven? Use mashed potatoes to explore which kitchen appliance does a better job at keeping food warm.

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.

In this science fair project, students discover how sedimentary layers form as sediments like mud, silt and sand settle over time.