By using a base 2 system in which only 2 digits are used, the 1 and the 0, we have discovered that any number can be represented. The numbers then can be used as code to capture other ideas. This is what is known as an abstraction.
These students are the first 4 bits. The 1, the 2, the 4 and the 8. They are representing the number 12 with the first 2 bits off and the next 2 on. In binary code this is represented as 1100.
Or, Off Off On On.
We are going to be using binary code to make our own puzzles.
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