1.2 Display Binary Numbers (using a variable)

Scratch solution

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when green flag clicked
set [number of dots v] to [1]
say (number of dots) for (1) secs
set [number of dots v] to [2]
say (number of dots) for (1) secs
set [number of dots v] to [4]
say (number of dots) for (1) secs
set [number of dots v] to [8]
say (number of dots) for (1) secs
set [number of dots v] to [16]
say (number of dots) for (1) secs

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Extra Challenge

Display the numbers from largest to smallest (display numbers 16, 8, 4, 2 and 1).