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2nd and 3rd Grade Engineering and Science Inquiry Resources : Page 3

How powerful is the reaction between baking soda and vinegar? Find out here!

Baking Soda and Vinegar Balloon

Most people assume that cold water freezes more quickly, but could that be false? Does hot water freeze faster than cold water? Let's find out!

Does Hot Water Freeze Faster Than Cold Water?

Can a toy car determine the strength of a magnet? In this cool magnet science fair project, young scientists will learn how to measure the strength of a magnet.

Magnet Science Fair Project: How to Measure the Strength of a Magnet

Use these STEM design challenges to foster creativity and critical thinking skills in young learners while introducing them to the engineering process.

STEM Design Challenge Cards for Young Learners

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

Forest Food Pyramid Project

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

Feeding Plants

This science fair project idea investigates emulsifiers that allow oil and vinegar to mix.

Like Oil And Vinegar

These science fair experiments demonstrate the chemistry of rust and the oxidation process.

Bust That Rust!

This project demonstrates the correspondence between the volume of water displaced by a submerged object and the volume of the object displacing it.

Eureka! Volume and the Displacement of Water

Build a 3d animal cell model with this cool science fair project, which helps kids visualize and understand the function of a cell's parts and organelles.

3D Animal Cell Model

Find out whether a longer airplane will fly farther or a wider paper airplane.

Does A Longer Paper Airplane Fly Farther than a Wide One?

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

Conductor or Insulator?

Do earthworms like moisture or darkness? Find out as we explore the relationship between earthworms and light.

Earthworms and Light: Do Worms Prefer Darkness?

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

Rate of Evaporation

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

Barometric Pressure

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

Water Transport in Plants

This science fair project investigates whether tapping the top or the side of the can will stop a vigorously-shaken can of soda from exploding.

How to Stop Soda From Exploding

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.

Everyday Darwin: Create a Nature Journal

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?

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

Dew Point, Humidity and Weather

In this hands-on design challenge your child will make their very own Rube Goldberg Machine.

Design Challenge: Make a Rube Goldberg Machine

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

Why Do Greens Turn Brown?

The possibilities are endless with this fun Halloween-themed STEM activity! With simple supplies, your child will experiment, adapt, and use their creativity while they build structures using different specifications.

Halloween STEM Building Challenge

Milk is made of water and fat; but how can you separate the two? Find out in this color changing milk experiment.

Color Changing Milk Experiment

This fun experiment provides a concrete and visually striking illustration of photosynthesis.

Demonstrating Photosynthesis: Writing in Grass

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

The goal of this golf science fair science fair project is to determine whether the temperature of a golf ball affects its elasticity and its rebound.

Golf Science Fair Project: Temperature and Rebound

This science fair project idea investigates how color affects temperature.

Color And Temperature

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

In this science fair project, students learn how pressure can make the minerals in a rock line up in the same direction and form bands and foliation.

How Does Pressure Change Minerals?

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