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Computers are really good at repeating actions.

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You can count to ten, twenty ore one hundred...

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But a computer can count to a billion or even a trillion.

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It won't get bored and it will only take a few seconds.

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Where it's countingor drawing or anything, 
Computer can repeat things hundreds or even billions of times.

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In programming, we call this a loop.

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A loop is how you repeat your code over and over again.

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For the next puzzle,
your goal is to help Anna to create a square with the repeat block.

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Any blocks you put inside a repeat block, 
will be repeated in sequence, as many times as you want.

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To draw a square, you can use the "move forward" and "turn" block 4 times.

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The easier way is to tell the computer to move forward and turn by 90 degrees once 
and then tell the computer to repeat these actions four times.

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To do that, you need to place the move forward and the turn right in a repeat block.

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Remember, you can change the number in the repeat-block to anything, and it will repeat the actions in the block that many times.