Teton County Library

What do a doorstop, a butter knife, and the front of a boat have in common? All of them are wedges! Wedges are simple machines. They help us to do jobs more easily. But don't take our word for it. Put wedges to the test with the fun experiments you'll find in this book. As part of the Searchlight Books collection, this series sheds light on a key science question―How Do Simple Machines Work? Hands-on experiments, interesting photos, and useful diagrams...

Which works better to haul a pumpkin-a lever or wheels and axles? Readers will see how a group of kids compares two simple machines and decides which one does a better job at moving the pumpkin. This book supports engineering design standards for primary grades in the Next Generation Science Standards.

These kids are playing a game, trying to move a person with a simple machine. Which will work better-an inclined plane or a lever? Readers will see them compare the simple machines to decide. This book supports engineering design standards for primary grades in the Next Generation Science Standards.

What do bicycles, doorknobs, and screwdrivers have in common? All of them use wheels and axles to perform work! Wheels and axles are simple machines. They help us to do jobs more easily. But don't take our word for it. Put wheels and axles to the test with the fun experiments you'll find in this book. As part of the Searchlight Books collection, this series sheds light on a key science question―How Do Simple Machines Work? Hands-on experiments,...

If you ride a bicycle or a skateboard, or if own roller skates, you use wheels and axles. Readers discover the science behind these important simple machines. It's hard to go anywhere in our world today without seeing wheels and axles at work. Cars and trucks use these to take people to work and school every day. Tractors and wagons on farms have wheels and axles, too. Manageable text and vivid photographs help readers understand this basic science...

If you need to move something heavy from one height to another, you need an inclined plane. These simple machines help us go up, and they help us go down. Moving vans use them, and so do people in wheelchairs. Inclined planes can also help us keep a door open and let us do skateboarding tricks at the skate park. Accessible text and vivid photographs help readers understand this essential science topic. A helpful graphic organizer and a useful glossary...

The answers to what screws are, why we need them, and many more are, provided for curious readers. Screws help change a turning motion into an up-and-down movement. Screws, nuts, and bolts help keep many items in our world together. Readers will gain a valuable understanding of these simple machines through accessible text and colorful photographs. A comprehensive glossary and eye-catching graphic organizer aid readers in their exploration of these...