Reply to How would you explain this math question to your child?

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[quote=Anonymous][quote=Anonymous][quote=Anonymous]
What's funny is that if you read most responses to this question, I can see why my sister was frustrated, as was my niece.  My niece did understand what perimeter was.  If given a rectangle with the length and width she knew the answer.  If asked what perimeter was, she could answer it.  Lots of the posters here were focusing their answers on what is perimeter rather than explaining HOW to get to the answer even after I'd said she understood perimeter.  I am NOT blaming a single responder because I was stumped, too!!!  After reading what you wrote, I was able to realize I needed my sister to get my niece to pinpoint exactly WHAT she was counting up when she was counting up the perimeter "blocks" in her case (or lines, in yours).[/quote]
It sounds like you niece doesn't know what perimeter is.  It sounds like she's only calculated the perimeter of rectangles, so she thinks it's the sum of the lengths and widths, and that while she may have memorized a definition, she doesn't actually know it and understand it.  [/quote]
+1
This question is getting at a more conceptual understanding of perimeter.  I don't think the "key" would be a problem for someone who has a very concrete grasp of the concept of perimeter.[/quote]

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