3rd Grade Engineering and Science Inquiry Activities : Page 4

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

This science fair project idea teaches how the gases and pollution in the air affect the earth's atmosphere temperature.

In this experiment you explore how tectonic plates move to create land and expand bodies of water.

Science fair project examining barometric pressure, and how it can be used to predict the weather. How does atmospheric pressures relate to weather conditions?

This project compares the strength of one, two, and three-ply toilet paper.

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

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

Science fair project which determines whether the size or the thickness of a piece of paper has an effect on how many times it can be folded in half.

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

This science fair project idea determines what household items are good conductors of electricity.

In this outdoor science activity you'll find tips on how to create a nature journal by choosing a native plant or animal and tracking that species.

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

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

In this exciting design challenge, your child will use design thinking skills to create a mixture that can inflate a balloon.

Test whether plants can grow without sunlight and water.

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

This project determines what category of person is most likely to be ticklish.

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

This science fair project idea demonstrates that plants give off water.

The objective of this science fair project is to examine the effects of temperature on salt and water solutions, as they form crystals over time.

In this physics project, learn about the relationship between light intensity and distance using a laser pointer, flashlight, and graph paper!

This science fair project idea investigates if webbed feet help a duck (and others) swim.

This project explores whether nails, toothpicks, straws, or pen nibs are best for applying ink to paper.

Have you ever wondered how many numbers most people can memorize? Test your friends to find out!

This science fair project idea investigates how color affects temperature.

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.

This science fair project idea investigates the ability of different whitening toothpastes to whiten teeth.

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!

This science fair project idea determines which method of hand cleansing is the most effective.

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