Thursday, January 5, 2012

Model Drawing with Rate and Speed

Before break, a participant asked me to show how I'd use model drawing to show rate and speed problems.She was good enough to send examples.  Thanks!!

  Since the unit bar is labelled with Mrs. G's time, I put her miles above the bar.  I could have done a running total below the bar, but chose to do an ellipsis instead.  It's a great tool to use when the numbers are larger.

This problem clearly shows the relationship to multiplication.  After all, model drawing is turning a word problem into a visual representation so the student can find what to do next.

For more explanations, I recommend Char Forsten's Step-By-Step Model Drawing for grades 1-6

Or Lorraine Walker's Model Drawing for Challenging Word Problems for grades 6-Algebra 1.

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