2nd and 3rd Grade Engineering and Science Inquiry Activities : Page 6

In this design challenge, your child will make a bottle rocket using typical household items.

This science fair project idea explores how the shape of a boat affects its density and how much weight it can float.

This experiment challenges students to forecast the weather based on the surrounding areas' weather.

In this project students experiment with making music using only glasses of water.

Before you get ready for a delicious scramble or omelet, add a bit of science to your morning routine!

How does water pressure change with depth? Kids learn how pressure works underwater with this cool and easy demo.

This science experiment examines the role of fat in food, especially in making bread rise and whipping cream.

This science fair project idea explores whether the process used to dry the beans we eat for food renders them unviable.

Learn about savanna flora and fauna in this science project! Take a look at characteristics of tropical grassland plants and animals that help them survive.

This science fair project idea investigates the difference in reaction times between boys and girls.

Learn about the layers of the Earth and make a model! Create a earth layer book, cake, or clay diagram.

In this science fair project, you'll make a "ghost" appear in a test tube, and learn about what happens when hot water and cold water interact.

In this experiment we will be determining whether birds prefer certain colors of seed.

Cherries usually burst with flavor, but in this science experiment they burst with osmotic pressure. This science activity will blow your curious kid's mind!

Study the life cycle of the common blowfly as it relates to forensic investigation. Record the first time you see flies, maggots, and eggs.

This classic children's game demonstrates how sound travels through air vs. through a solid.

This science fair project idea investigates how optical distances change the apparent size of an object as seen through a magnifying lens.

Science fair project that determines whether cooling eggs helps them be peeled more easily. Compare the time it took to peel each egg.

In this free science fair project, build a star clock and learn how to tell time on a clear night by observing the big dipper!

Free science fair project idea that examines the differences between cats and dogs. Analyze objective qualities rather than subjective ones.

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

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

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

Do you think you could walk around upside down -- with your feet in the air and your head on the ground?

Do different types of oil mix or stack? Find out in this science fair project idea!

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

Help your second grader observe the phases of the moon, and then let the fun loose: he'll get to chart his observations with marshmallows!

In this fun activity, your child will create their very own solar oven to bake s'mores!

Spiders don't go to grocery stores or fast food chains to get their food -- they set up traps and wait for their food to come to them!

Science fair project that determines whether lettuce that is harvested gradually yields more produce than lettuce that is harvested all at once.