3rd Grade Science Activities : Page 6

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

Kids discover what a homogeneous mixture is by adding sugar to distilled water and identify the various factors affecting solubility.

This science fair project idea determines if crystals will absorb food dye and if colors will mix by the process of diffusion.

Who needs paint, glitter, or crayons when you have natural art supplies right outside your front door?

Create a soda bottle garden that defies gravity! This hanging terrarium is housed in a soda bottle and perfect for crafty kids with a growing green thumb.

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

This science fair project idea explores substances that cause a bubble to last longer.

Learn about sound physics and do a survey experiment to explore the difference between sound and noise in this science project.

This science fair project teaches students about wilting and browning of salad greens.

Here's a great activity that uses corks and toothpicks to create a fleet of floating boats. Which design makes for the most seaworthy vessel?

In this 3rd grade science activity, you'll experiment with the little-known fourth state of matter: polymers! Mix borax with white glue and watch what happens.

How does frost form? How fast does it form? Do this simple science project using a plastic glass, rock salt and some water to learn about deposition.

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

Make a DIY golf putter and design your own golf putting course in this 2nd-3rd grade arts and crafts/game activity.

Discover flight initiation distance as you play around in the park with this fun bird watching project!

Hatch a praying mantis egg case in a homemade habitat with your child's help! This is an amazing experiment in science and nature for kids of any age.

This science fair project idea examines which type of insulation holds in the most heat.

Making your own glass cleaner is easy, effective and inexpensive!

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

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

Determine if gender affects the ability to identify different smells.

Learn how to tell time by the sun with this cool science fair project idea that tracks how the accuracy of a sundial changes over time.

This science fair project idea explores the egg's thin membrane.

Discover whether cold or hot water from the faucet will boil faster on the stove.

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

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

Who knew that you could make beads out of rose petals? Not only can it be done, but the beads smell wonderful!

Get your hands on a concoction that breaks the rules about what's a solid and what's a liquid.

This science fair project idea investigates the hardness property of minerals.

Explore aromas with your child and help boost her brain power with some fun and interactive science activities.