lesson

Solve the smaller parts

1 · Learn

Decomposition means breaking a task into smaller manageable parts. For a pattern of three squares, first make one square work. Then plan how to move to the next starting point.

Test the parts separately before combining them. Copying a broken part three times gives three broken parts, not a working design.

Draw one squareMove to next startRepeat the patternTest whole result
Key words and supplied examples.

2 · Worked example

I check the square returns to its starting direction. Then I add a pen-up move to create a gap before drawing the next square.

3 · Your turn

Why test one square before repeating a three-square pattern?

Check your answer

A mistake in the square would be repeated throughout the pattern. Checking the smaller part makes the source of an error easier to find.

4 · Apply your learning

Plan a two-shape pattern as named smaller tasks. Implement and test each part before combining them.

Adult guidance and safety

Use an adult-approved offline or school-managed application and invented non-personal data. Do not change real network settings, publish recordings or upload others' images. Follow paper models with practical work in a suitable tool and check saved files reopen.

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Write, draw or show your working. Use a mouse, pen or finger. This pad is not a submitted answer.

Not saved to your account. Download your drawing as PNG and your typed notes as TXT before leaving or refreshing. They are separate files. Do not enter private information.

Open a picture saved on this device to draw on it again. Opening replaces the drawing, but Undo can restore it. PNG only, up to 4 MB and 4096 × 4096 pixels. The picture stays in this browser; it is not uploaded. Paper lines in a saved picture become part of that picture.

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Open a UTF-8 TXT file from this device, up to 40 KB and 10,000 characters. It stays in this browser. Opening can be undone until you type again. Downloads keep a new copy; they do not change the file you opened.

Typed notes are not submitted answers.

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