Graph Zooming Archived PoW  Student Version Graph Zooming is no longer the current ESCOT Problem of the Week. The student version allows teachers to use the problem with their students without giving the students access to the archived answers. Teachers can use the link to the archived problem to get ideas of student thinking. Graph Zooming asks students to explore the concept of scale in mathematics and apply it to everyday experiences. This ESCOT PoW could be used as an introductory exploration of scale in graphing. If you have something to share with us as you use any of the links or suggestions on this page (something you tried and changed or a new idea), we would love to hear from you. Please email us. Alignment to the NCTM Standards  Grades 68
 understand numbers, ways of representing numbers, relationships among numbers, and number systems Geometry  use visualization, spatial reasoning, and geometric modeling to solve problems  specify locations and describe spatial relationships using coordinate geometry and other representational systems Problem Solving  solve problems that arise in mathematics and in other contexts Communication  communicate mathematical thinking coherently and clearly to peers, teachers, and others  use the language of mathematics to express mathematical ideas precisely Connections  recognize and apply mathematics in contexts outside of mathematics
 Read and discuss the scale page on Ursula Whitcher's Chameleon Graphing site. Suggested by Susan Socha: Have students look at a commercial map site, choose a location (maybe the city where their school is located) and start zooming in, noting the scale at the bottom. Here are some sites to use:
I tried this with Expedia and after typing in Swarthmore, I zoomed in until I could see the street where the Math Forum is located. I watched the scale. It's really cool, because you can zoom out to miles, and zoom in to yards. It would be great to ask the kids why you would need both kinds of maps. When do you need a big picture, and when do you need details?
[top] Related Lessons Online:
 Outdoor math activities for nice weather [top] Resources to use with students:
 Finding yintercepts  Graphing y = mx+b  Graphing y = mx+b  Slope of Lines  Using the Variables X and Y to Represent the Axes Vocabulary  axis  coordinate  coordinate axes  equation  intersection  ordered pair  origin  scale  xaxis  yaxis [top] Other Resources
 Graphit  Shodor Organization  Powers of 10.com  Quarks to Quasars, Powers of Ten  Slope Slider  Shodor Organization
