"The mathematical concepts of tally marks, picture graphs, and bar graphs are introduced as children hold a toy sale to raise money for a local hospital. Readers also learn to organize and interpret data, to count tally marks, and basic addition and subtraction skills. This book includes a discover activity, a science connection, and a mathematical vocabulary introduction"--Provided by publisher.

IMath ideas : toy tally -- Discover activity : make a tally table -- Tallying the toys -- Math at work -- What's the word? -- Connecting to science -- More toys! -- iMath ideas : how many toys are there? -- What comes next?.