balances (weighing instruments)

". . . Young readers will learn how scientists use scales and balances to observe and measure weight"--Provided by publisher.

Introduces the science concept of balance through the use of simple rebus sentences, a rhyming story, and everyday examples. Includes a glossary.

Introduces the function, parts, and uses of balances, and provides instructions for two activities that demonstrate how a balance works.

Simple text and photographs describe and illustrate the use of a balance to measure or compare weights.