A cartoon involving lemonade stands and interpreting percents is coupled with a full-page activity sheet.
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Lincoln Peirce
A cartoon involving presidential birth dates is coupled with a full-page activity sheet.
A cartoon highlighting growth of a retirement fund is coupled with a full-page activity sheet.
Arthur N. DiVito
Mathematics has been taught throughout history without much more than a straightedge, a compass, and an abacus. So there is little question that all the major concepts of mathematics can be delivered without the aid of modern technology. But clearly, just the time-saving aspect of using technology can greatly enhance the art of teaching. Here we will identify some of the ways the use of technology can prove helpful in the classroom.
Jessica S. Cohen
Use strip diagrams to model and solve problems requiring proportional reasoning.
Elizabeth T. Walker and Jeffrey S. Molisani
Multiple entry points on the road to assessing students can tell teachers if students can do math and therefore apply math to real-world problems.
Steve Leinwand, DeAnn Huinker, and Daniel Brahier
This article provides an introduction to the six guiding principles for school mathematics and eight core mathematics teaching practices that appear in the new NCTM document, Principles to Actions: Ensuring Mathematical Success for All.
Margaret Rathouz, Nesrin Cengiz, Angela Krebs, and Rheta N. Rubenstein
Tasks that have been developed to build a foundation for ratio meanings and language not only provide valuable information about student thinking but also support proportional reasoning.
Math for Real: The Battle of Antietam
“when will I ever use this?”
Allesandra King
This problem ties into real-life population estimates.
Kara L. Imm and Meredith D. Lorber
By exploring an open-ended investigation involving proportional reasoning, students were able to walk through both problem solving and modeling.
