App Store

Google Play

Details page - Device banner - 894x1036

Masuki dunia cerita tanpa batas

Dengarkan dan baca

Robin Nelson

Students will see how levels indicate whether objects are flat or straight. A back matter spread explains why people use levels.

Intuitive

Lerner

First Step Nonfiction - Tools at Work

What Does a Level Do?

Beginning readers will explore how hammers pound in and pull out nails. A back matter spread explains how hammers are one kind of simple machine: a lever.

What Does a Hammer Do?

Learners will understand how saws have sharp teeth that cut through wood. A back matter spread explains how saws are a kind of simple machine: a wedge.

What Does a Saw Do?

Young readers will learn how pliers grip and hold objects in their jaws. A back matter spread explains how pliers also work as levers.

What Do Pliers Do?

Kids will find out how wrenches tighten bolts in many types of situations. A back matter spread explains how a wrench is another type of lever.

What Does a Wrench Do?

Curious readers will discover how screwdrivers tighten screws using different kinds of tips. A back matter spread explains how screws are simple machines used to fasten objects together.