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The Card Hole

This is a neat demonstration of the difference between AREA and LINE or PERIMETER.


Photos taken at King Edward's School, Birmingham kindly supplied by David Ash Photography

With patience you can cut a hole in any card as big as you like!

Here are TWENTY people inside one birthday card at a
Yorkshire homeschoolers' event in 2019!

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Links:

Teacher Resources

The Murderous Maths Home Page

"How to climb through a postcard" appears in THE BRAIN-BENDING BASICS Find more about area and perimeters in ALL SHAPES AND SIZES