Double dabble

Double dabble is a way to count in binary (a system of counting that uses only 0s and 1s). It works a bit like counting in regular numbers, but instead of each number in a row going up by one each time you count, in Double Dabble the numbers in a row always go up by two. For example, when counting in binary, the first two numbers are 0 and 10. Then, instead of going to 11, you would go to 100. We keep doubling the number until we get to the number we want. To help us keep track, we can use a chart to write all the numbers on. When we want to count a larger number, we just keep on doubling again.