In middle school, students' reasoning about problems no longer routinely ends in solutions. Students can consider whether their solutions make sense or lead to solutions for related problems. This book presents investigations that allow students to reason about factors, area formulas, similar figures, data in a set, and growing patterns. An investigation of the Pythagorean theorem introduces proof in a developmentally appropriate way. Included is a CD-ROM with applets for students' use, ready-to-print activity sheets, and professional development resources for teachers. --publisher description.Let the teams work by themselves to complete steps 1-9 on the sheet. In these steps, the students complete Venn diagrams by sorting multiples of numbers that a ac have no common factors other than 1 (3 and 8; 2 and 7); ac are either factors or anbsp;...

Title | : | Navigating Through Problem Solving and Reasoning in Grades 6-8 |

Author | : | Valerie A. DeBellis, Susan N. Friel |

Publisher | : | National Council of Teachers of Mathematics - 2009-04-17 |

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