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Preschool - 4th Grade Engineering and Science Inquiry Resources : Page 3

How does a compass work? What's a magnetic field? Kids will build their own compass at home to find the answers in this great science fair project idea.

How Does a Compass Work?

The goal of this evaporation experiment is to learn about how different external conditions affect drying time.

Rate of Evaporation

The moon doesn't produce its own light, so why can we see it shining in the sky? Learn about reflection and planetshine in this fun and easy science project!

Why Does the Moon Glow?

Science fair project that examines what causes thunder and why a thunderclap sounds so loud. How is lightening related to the creation of sound waves?

A Thunderous Sound

What are buttress roots? In this fun science project, make a model of a rainforest tree and learn how they help trees survive in the tropical rainforest!

Tropical Rainforest Trees: Buttress Roots

Use this fossils worksheet to help a child learn about life on earth.  Your child will learn about evolution and extinction, and also form a hypothesis.

Fossils Worksheets: Dig It! #2

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.

Use the Altitude of Polaris to Find Latitude

Are you ready to be a detective for science? Then get out your magnifying glass and start studying fingerprints!

Fingerprint Analysis: A Family Case Study

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

Light Intensity and Distance

Using a toy race car kids create a visual model of the Doppler Effect.

A Visual Model of the Doppler Effect

In this free science fair project idea, we learn about surface tension and how it can support mass—in this case, a floating paper clip.

Floating Paper Clip

This science fair project teaches students the differences between fruits and vegetables.

Is it a Fruit or a Veggie?

Your preschooler can learn how to siphon water with just two bottles and a plastic tube in this fun, educational science activity.

Siphon With Suction and Gravity!

Develop your child's mathematical and engineering skills with this fun building brick challenge. In this activity, your learner will be challenged to create a boat out of building bricks. 

Building Brick Challenge: Build a Boat

Kids will learn about fossils in this worksheet. Help your child learn about the scientific method by getting him to examine a fossilized dinosaur skeleton.

Fossil Lesson: Dig It! #5

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

What Kinds of Water Yield Fastest Plant Growth?

Science fair project that examines condensation and the conditions needed in order for dew to form.

Dew Point, Humidity and Weather

How does a flashlight work? Kids will make a complete circuit and explore how voltage contributes to brightness with this science fair project idea.

Complete Circuit: How Does a Flashlight Work?

In this insulation experiment, you'll learn which clothes keep you warm in the cold, and which make you shiver.

Insulation Experiment: Keep Your Body Warm

In this science fair project, apply the principles of leverage and force by building six simple machines designed to set weights in motion.

Simple Machines

Demonstrate how you can make your own compass using a magnetized needle. It also allows you to compare magnetic north and geographic north.

How to Make a Compass

What causes the seasons to change? Kids find out by modeling the earth's tilt using a globe, flashlight and graph paper in this cool science fair project idea.

What Causes the Seasons to Change?

This simple heat transfer experiment is a great introduction to the concepts of heat transfer and conduction.

Heat Transfer Experiment

In this design challenge, your child will use building bricks to create a funny face. The activity instructions include question prompts thta can help guide your child through the creative process, and promote their problem-solving skills.

Building Brick Challenge: Make a Face

Learn more about how plants work with this cool celery experiment! Use this worksheet to help you record your observations after doing this experiment.

Celery Experiment

This science project uses Mohs&acirc; Hardness Test to show kids how to compare the hardness of different types of minerals.

The Mohs Test: How to Compare the Hardness of Minerals

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

Melting Ice Experiment

Why does honey crystallize? This science fair project project answers this question and identifies the variable that makes this sweet solute crystallize faster.

Why Does Honey Crystallize?

In this sound experiment children listen for differences as they tap on a bag of air, a bag of water, and a wooden block held up to their ears.

How Well Does Sound Travel Through a Gas? A Liquid? A Solid?

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

Keep the Boat Afloat

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