Card Trick
Seven by three array
to demonstrate Conceptual and procedural understanding
and the implications for Teaching and Learning

Magic or Mathematical?

I invite you to view this video and see if you believe magic, slight of hand, or mathematics is being used to perform this card trick?

View the video and see what you think!

Magic? Slight of hand?

Explain and demonstrate the trick.

Will it work for a three by seven array? Why do you believe the way you do?

Can you think of a way to make it work, if it doesn't?

Will the same procedure work for an array of cards that is a rectangle 3 x 7 if the selected cards aren't put on top? (card trick 3 x 7 array see video)


Dr. Robert Sweetland's Notes ©