The following activities help children to develop number sense through activities involving collection,
representation, and analysis of data. In addition, children practice reading and writing large numbers and use estimation to arrive at appropriate answers. This unit was adapted from "Count on Mathematics for Number Sense," by William R. Speer and Daniel J. Brahier, which appeared in Teaching Children Mathematics, vol. 2, no. 6, p. 351-56.
Individual Lessons
Lesson 1 - Every Breath You Take In the following open-ended exploration, students estimate, experiment, and display real-life data. Students use the number of breaths taken during a specified time period as the context for this exploration. Lesson 2 - Making Your First Million In this activity for grades 4-6, students attempt to identify the concept of a million by working with smaller numerical units, such as blocks of 10 or 100, and then expanding the idea by multiplication or repeated addition until a million is reached. Additionally, they use critical thinking to analyze situations and to identify mathematical patterns that will enable them to develop the concept of very large numbers.
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