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NCTM vs State Standards: Neither shall win.


I am sitting out on my mother’s deck in beautiful North Carolina, enjoying the sunny weather, 70 degree temperature, and dive-bombing humming birds. Yes, I am being attached by humming birds! One just flew to within three feet of my head, stopped, buzzed for about five seconds and then quickly departed. The assault on my physical well being and overloaded senses is making it difficult to concentrate on Engaging Young Children in Mathematics.

A bit “heady” but still accessible in the ways that scholarly journals aren’t, Engaging Young Children in Mathematics describes a research-based set of standards and learning trajectories for developing Pre-K to Grade 2 students’ mathematical understanding. The authors rely heavily on the blueprint provided by the Principles and Standards for School Mathematics (2000), an oft-cited vision for K12 mathematics instruction, while deconstructing its deficiencies and throwing state standards “out the door.”

All individuals concerned with educational standards must conscientiously distinguish two types of standards. One type prescribes standards as requirements for mastery. The second type promotes standards as a vision of excellence. An example of the former is the use of standards in making high-stakes decisions such as retaining students in a grade or determining teachers’ salaries. An example of the latter is the vision of mathematics education in the Principles and Standards for School Mathematics (2000). There is a substantial and critical difference between standards as a vision of excellence and standards as narrow and rigid requirements for mastery. Only the former, including flexible guidelines and ways to achieve learning goals, is appropriate for early childhood mathematics education at the national level (pp. 8-9).

The authors go on to say that that the “vision of excellence” embodied within the NCTM standards, although a better vehicle for promoting mathematical understanding than typical state standards’ twisted test-based classification, is deficient:

Fundamental questions for teachers are what to teach, when to teach it, and how to teach it meaningfully. For goals to truly be useful guides, they need to be more closely connected to age/grade levels than are those in NCTM’s visionary PSSM.

And you know what? This makes sense.

Dire Straits: Game Prototype

Dire Straits is a game. At its core, Dire Staits is a variant of Seymour Papert’s LOGO program built on the Massachusetts Institute of Technology’s Scratch software. Incorporating a nautical theme, this game helps upper elementary and middle school students refine their understanding of lines, angles, rotations, and general spatial ability.

Three students (Peter, Matt, and Willy) used the instructional design process to develop and refine the core mechanics so that the game addressed key Virginia Standards of Learning for sixth grade students. For more information on the final proposal, please see this document.

Dire Straits consists of a number of scenarios (levels) that feature captains from historical events prior to the 20th century. The prototype for Dire Straits, The Salih Reis Experience, is provided below. This scenario is one of the more advanced levels.

Introductory Video

Dire Straits: Game Prototype

Learn more about this project

MacArthur Submission: Fab@School

This video is one of the final requirements for Dr. Glen Bull’s MacArthur Digital Media and Learning Competition submission. The submission requests funding for the development and creation of Fab@School laboratories that feature curriculum adapted for digital fabrication in elementary schools as well as the establishment of an online, open-source library for sharing and disseminating digital designs.

After viewing the video, I encourage you to register your vote for the project by posting comments! Your comments will be instrumental in helping this become a funded reality. Even if you already commented in the previous round, you may comment again incorporating your reaction to the video.

Post Comments at http://dmlcompetition.net/pligg/story.php?title=630

Deadline for comments/feedback: Thursday, April 22, 10 AM EDT

I also posted a number of other videos that might be of interest to people wanting to know more about digital fabrication and the Curry School of Education’s commitment to this STEM initiative.

General Mills and Post: Poor Mathematicians?

There is a great post on Scientific American about “Juice Box Geometry” that relates to this post. I encourage readers of this post to check it out!

This post is a redesign of Kris’s Cereal Box digital fabrication project. Although the tweaks that I describe move Kris’s elementary lesson into the middle school and high school realm, it could be altered to be more of a discovery-type experience for elementary students familiar with digital fabrication and ModelMaker.

I came across a lesson this weekend that very simply stated that companies like General Mills and Post must have some reason for creating cereal boxes in their current dimensions other than “bottom line” economic decisions. The rationale was simple: If companies that make cereal really wanted to maximize their profits, then they would reconsider the way in which cereal was packaged. Cereal companies could sell the same amount of bran flakes and crunchy goodness (volume) by redesigning the packaging (surface area) so that it resembled a cube. Less surface area (packaging materials) and equal volume = lower manufacturing costs. Plus, there would be ecological benefits.

This afternoon I pulled out something that I have not touched for a truly mathematical purpose since high school: a ruler. I wanted to test this lesson’s underlying ideas. I grabbed my box of Total Cinnamon Crunch off the refrigerator, and calculated the following dimensions using my ruler:

  • Length: 7 5/8 inches
  • Width: 2 inches
  • Height:10 1/8 inches

I had to do some fraction-decimal conversions in order to re-create the 3D model below. That was worthwhile as a standalone activity if readers are thinking about mathematical procedures, processes, and algorithms. The following image is a 3D representation of my cereal box (without graphics) in FabLab ModelMaker.

I have to admit that I did not spend the time calculating the cereal box’s surface area and volume. I actually used ModelMaker’s properties to give me the answer for surface area and volume.

  • Surface Area: 225.406 inches squared (rounded)
  • Volume: 154.406 inches cubed (rounded)

To test the hypothesis, I took the cubic root (I forget the mathematical terms) of the volume, 154.406 inches cubed. The rounded answer was a length, width, and height of 5.365 inches (rounded), the dimensions for my cube. The result? A package that has relatively similar volume (disregarding variations due to rounding) and a much smaller surface area!

If I was going to engineer a cereal box, I would not begin with off-the-shelf examples as a starting point. Greater surface area for a given volume equals higher manufacturing costs and greater waste, a practice that has to have some origin… Why do companies like General Mills and Post continue to produce cereal boxes that are clearly economically and ecologically inferior? The answer to this question is likely an entirely new learning strand that relates to social studies…

Is there truth to the idea that packaging relies more on the Golden Mean then the economic bottom line?

The World Peace Game

World Peace…and other 4th-grade achievements is premiering this week at the SXSW festival in Austin, TX. This documentary focuses on a local Charlottesville teacher, John Hunter, and his fourth grade students. The movie highlights Hunter’s background and features his self-created game, The World Peace Game, “a hands-on political simulation that gives players the opportunity to explore the connectedness of the global community through the lens of the economic, social, and environmental crises and the imminent threat of war” (World Peace website).

The Problem with Polygons

This short video is ripe for exploration in all geometry classrooms. Plus, I would love to see Unlimited Detail Technology powering a game on my XBox.

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