3rd and 4th Grade Engineering and Science Inquiry Activities : Page 5

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

What is topography? Kids find out by learning to make and read a topographic map in this awesome science fair project idea.

This science fair project idea examines the reason boats are shaped and engineered.

This science project challenges students to study deer behavior in their natural habitat- the feeding patterns, social behaviors, male to female ratio, etc.

Examine whether distilled water, spring water, or regular tap water yield faster plant growth.

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

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

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

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

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.

Learn how to make a food pyramid with animals in a a coniferous forest ecosystem around your home.

Examine the effect of pressure on carbonation in soda.

This science fair project creates a visual model of whatâs happening to sound waves as a car approaches and then leaves.

Have your kid determine if a goldfish can be conditioned to expect food the same way Pavlov's dogs did with this fascinating science fair project.

Make a backbone model to explore human anatomy and life science.

In this project, all you need is a protractor to learn how to use the altitude of Polaris to find latitude on Earth. Polaris is also known as the North Star.

This project explores whether plants can live and grow when "watered" with juice, soda, or milk.

Science fair project that examines the different types of precipitation, evaluates the density of snow and calculates the ratio of snow-to-liquid.

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

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

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.

Observe corn seed germination to learn about dicots and monocots and how plants grow from seeds to seedlings to full-grown plants!

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

Have you ever seen fruit decay? Find out if a fruit will rot faster if you open it versus leaving it untouched!

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.

Did you even wonder why some rocks are round and smooth while others are broken up into small pieces?

In this science fair project, students create their own miniature salt flats at home.

In this science project, learn about water transport in plants and make a beautiful dyed floral arrangement with cohesion, adhesion, and xylem tubes!

Here is a fun middle school science project on factors affecting solubility. Learn how dissolved solids can "crash out" to form crystals when conditions change.

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