2nd - 4th Grade Science Activities : Page 16

Test out the pH levels of soil in your backyard versus soil in more wild environments to solve this science case.

Using an empty tennis ball can and a swimming pool, you will determine if it's possible to have a conversation under water.

Your second grader will love this simple soda bottle race car activity. Make a ramp and customize your car for an entertaining way to learn scientific concepts.

Do you have your isopods straight? Learn about sow bug and pill bug behavior by building a terrarium to study them in!

Tree rings can tell the age of the tree but also information about the world. This science experiment uses tree stumps to discover new facts.

Show your child that the simplest ingredients (salt and water) can be used to illustrate the concept of density!

This science project teaches students the relationship between compost and plant growth. Students conduct an experiment with different types of compost.

Unlike other seed sprouting projects, this one allows kids to compare five different sprouts (either 5 herbs or 5 flowers) by watching them grow in a glove.

Is your child a young ornithologist in the making?

This science fair project idea explores whether white light can be separated into different colors.

Can you imagine a sky filled with bright, colorful bubbles? Make this whimsical scene come alive with bubble science!

I scream, you scream, we all scream for homemade spearmint ice cream!

How does salinity affect the point at which water freezes? Kids will find out by performing this cool melting ice experiment.

Would your dog prefer homemade or store-bought food? Raw or cooked? Test your dog's preferred diet in this fun experiment.

How well can people recall what they have observed. Test your knowledge in this fun experiment.

This activity challenges students to use computational thinking as they create a sequence of commands that will make a robot navigate around several obstacles.

Find the North Star, and measure your latitude! The purpose of this science fair project is to find latitude and learn about geographic locations.

This tricky building block challenge asks your learner to think creatively. They will work on their divergent thinking skills as they try to fill up an index card perfectly with building bricks.

Wondering how we know that air is there? Here's a quick and easy experiment that proves that air may be thin, but it's not too wimpy to block your shot!

Science fair project that demonstrates the effect of detergent pollution on fresh water birds' ability to stay afloat.

Check out this cool science project idea to learn about rocks and explore the cycles of formation, breakdown, and reformation of rocks in the Earth's crust.

Collect meteorite dust with a magnet in your very own backyard! The objective of this science fair project is to gather meteorite dust to study outer space.

In this activity, children will work on their mathematics and engineering skills as they attempt to recreate the Eiffel Tower out of building blocks!

Find out whether putting something on top of a plant will inhibit its growth.

This science fair project idea investigates how the height at which a pendulum is released affects the length of time it continues.

Soil and energy don't go together, right? That would be as bizarre as a pairing of peanut butter and marshmallows! Well, actually...

This science fair project idea highlights decomposition rates by comparing how long it takes an item to decompose in a compost pile vs. a landfill.

Show your kids the power of baking powder by conducting a simple experiment. Make four batches of cornbread, all identical except for one thing: baking powder!

In this simple circular motion experiment, you'll observe tangential velocity and learn about how acceleration and centripetal force affect an object.

There are many benefits to bugs and insects. This science project shows how cockroaches, termites, and other critters benefit our planet.