Simple text and illustrations introduce the reader to tally charts. Includes audio, videos, activities, weblinks, slideshows, transparencies, maps, quizzes, and supplementary resources.
Explains the features of tally charts and discusses how they can be used to organize data. Outlines how to make a tally chart of one's own and includes photographs and a glossary.
Mona and her friends hold a toy sale to help raise money for their local children's hospital. In the process they learn how to use tally marks and different types of graphs to calculate how many toys they have sold and how much money they have made.