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Counting in Binary

9/29/2014

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Today we learned how to count in binary using cards with dots on them. 
Picture
Each card represents a binary digit that can be a 1 or a 0. The card is a 1 if the dots are showing and the card is a 0 if they are hidden. To convert a binary number to regular numbers just add up all the dots.

Examples: 
00000 -> 0 + 0 + 0 + 0 +0 = 0
00001 -> 0 + 0 + 0 + 0 + 1 = 1
01010 -> 0 + 8 + 0 + 2 + 0 = 10
10100 -> 16 + 0 + 4 + 0 + 0 = 20
11111 -> 16 + 8 + 4 + 2 + 0 = 31

We also did a magic trick where I read peoples minds, if you want to make the cards to impress your friends at dinner parties here is the instructions

Then we learned how to count binary on our fingers (be careful not to be rude).
Counting to ten in binary:
1
10
11
100
101
110
111
1000
1001
1010
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