In this lesson, students develop number sense through a series of three hands-on activities. Students explore the following concepts: the magnitude of a million, fractions between 0 and 1, and the effect of decimal operations.
Included here is a selection of problems and activities, appropriate for the middle grades classroom, for which the underlying theme is the development of number sense. These activities can be used in varied ways to generate discussion and to extend student thinking about number-related concepts. The discussion that arises as students describe their thinking will certainly give insight into their thinking and will help in evaluating students' development of number sense.