Steffora, Tracey.

Hours, minutes, and seconds / Tracey Steffora. - Chicago : Heinemann Library, c2011. - 24 p. : col. ill. ; 18 x 21 cm. - Measuring time. Acorn. .

Includes index.

What is time -- How long is a second? -- How long is a minute? -- How long is an hour? -- Clocks -- Using time -- Thinking about time. GRL: H

Learn about the component parts that make up units of time.

004-008.

ISBN: 9781432957865

LCCN: 2010028825

Subjects--Topical Terms:
Time.
Time measurements.
Clocks and watches.

LC Class. No.: QB209.5 / .S746 2011

Dewey Class. No.: 529/.7