Mouse and Elephant Measuring Growth - Middle Grades Mathematics Project Author:W. Fitzgerald, Glenda Lappan Students become effective problem solvers as they discover significant relationships in mathematics and acquire logical thinking that helps take the "problem" out of problem solving. As students learn to group ideas, make key mathematical connections, and develop strategies, they gain confidence in meeting a range of mathematical challenges. Tea... more »cher Source Books contain reproducible worksheets, teacher instruction models, review problems, a unit test, and complete answers. Five Volume Set/Grades 6-9« less