Sunday, March 26, 2017

March 12, 2017 - Math Circle 2.0

Warm up

Focus on equality and operation sign:

Does 5 + 7 = 11?
Why not?

5 = _ + _
10 = _ + _
2 = _ - _


Substitute a symbol

6 = x + x
10 = y + y

Game

Bulls and Cows - mathematical game.  There is a secret code n digit code with all the digits  being different.  The kids then guess the code.  If they have a digit that is present in the code, it is a cow.  It they have a digit that is both present and in the correct position, they have a bull.  The number of bulls and cows are reported after each guess.  The game stops when the code is guessed correctly.

The kids picked a code for Sanjay and Darrin to solve that was 3 digits long.  The kids then stumped the adults with a 4 digit code.

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