Demo:
1. Visit Scratch.mit.edu or open scratch version 3
2. Add the pen addon to the scratch project
3. Experiment with the blocks that use the pen
4. Draw a square of side 50 units

Scratch Demo: https://scratch.mit.edu/projects/650520375

Video Demo:

Task: Prompt the user to enter a value and store it in a variable called “Side”. Proceed to draw a square with a length of side equal to “Side”. (Assume the user enters a size that can fit in the stage area.)

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