Build a Craft Stick Catapult

Build a Craft Stick Catapult

Ancient armies used catapults in battle. But the catapult has been used as recently as World War I. In that war, soldiers used catapults to toss hand grenades at the enemy. Today, catapults are used to launch planes off the decks of huge ships called aircraft carriers. Because the runway is short on an aircraft carrier, the catapult helps get the plane into the air quickly. Try making your own!
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Build the Eiffel Tower

Build the Eiffel Tower

From The Science and Technology of Marie Curie

Built in 1889 for the World Exposition, the Eiffel Tower honored the French Revolution. It also showcased national engineering and design expertise to an audience of global visitors. Originally intended as a temporary monument, it still looms large over Paris today, remaining one of the world’s most visited landmarks.

Make Your Own Zibaldone

Make Your Own Zibaldone

From The Science and Technology of Leonardo da Vinci

A zibaldone is the Italian word for “a heap of things.” This is what Leonardo’s notebook was called. He collected a heap of ideas, observations, questions, and experiments on the pages of his notebooks, putting everything he saw or thought into the same book, instead of having different notebooks for different topics. And he used every corner and both sides of every page. In the 1400s, books and paper were more plentiful than they had...

Experiment with Homemade Soap

Experiment with Homemade Soap

From The Science and Technology of Ben Franklin

Back when Ben Franklin was a kid, making soap was a smelly affair. It’s much easier—and more fun—today. Have an adult help you with the knife and the hot glycerin (soap).



From Fairground Physics

Most older roller coasters are pulled up that first hill. However, some newer coasters have pneumatic launch systems. That means a shot of compressed air launches the coaster up the hill. We’re going to build a simple version of that with a straw that you blow through.



Praise for other books in this series:

Explore Electricity!
National Science Teachers Association Recommends
“Explore Electricity is written for an elementary age level, but middle school students would enjoy learning about historical background on electricity while completing the electricity projects. The contents of this book will captivate students with the electrifying topics. This book is a well-written resource for classroom teachers, students, and parents.”

Explore Simple Machines!
National Science Teachers Association
“This is not your usual activity book. Written for the student, with inquiry in mind, the explanations are simple and easy to follow, and there is an explanation of what is happening and questions to extend the learning. I would use [Explore Simple Machines] with young scientists in my class, and I would also put the materials in a center for young children to explore, make, and do . . . I honestly didn't think simple machines were fun or easy to understand. This book changed that for me and for my students.”

Detailed Book Description

AVAILABLE JUNE 2020. How does a car move from one place to another? How does the lawnmower eat up the grass? How do cranes lift such heavy objects?

From ancient times to now, engines have powered the activities of people’s lives. Engines! With Science Projects for Kids invites readers ages 7 to 10 to explore engines and deepen their understanding of the history of engines, what makes them hum, and all the special jobs they do for humans. Learn about heat engines that power everything from trains to cars to planes to nuclear power plants. Explore electric motors and the magnetism that makes them run. Discover pneumatic motors that work with air and hydraulic motors that work with fluids! Plus, learn about some engines you might not have even heard of before—engines in nature that exist at the both the universal and the molecular levels!

Explore engines through 25 hands-on, science-minded projects plus fascinating facts, essential questions, links to online resources, and even jokes help support deeper learning!

Try these hands-on engineering projects!

  • Construct a rubber band heat engine
  • Build a simple circuit
  • Demonstrate pressurized air by lifting books
  • Build a milk-carton conveyor belt
Available In:
Paperback, $14.95
Hardcover, $19.95
Includes: Table of Contents | Timeline | Charts | Glossary | Resources | Index | Metric Conversions Chart
Specs: 8x10 size | 96 pages
Subject: Science



Let’s Explore Engines!

Chapter 1
Hot Burning Fuel: Heat Engines

Chapter 2
A Magnetic Attraction: Electric Motors

Chapter 3
Powered by Air: Pneumatic Motors

Chapter 4
Fluids Under Pressure: Hydraulic Motors

Chapter 5
Tick-Tock-Tick-Tock: Clockwork Motors

Metric Conversions
Essential Questions