Doubling and multiplying /
Richard Leffingwell.
- Chicago : Heinemann Library, c2006.
- 24 p. : col. ill. ; 23 cm.
- Basic math Heinemann read and learn .
- Leffingwell, Richard. Basic math. .
Includes index.
What is doubling? -- Doubling flowers -- Doubling marbles -- Doubling stars -- Doubling buttons -- Practice doubling -- Quiz -- The "times" sign.