Draw a square (with a loop)

Challenge Level: Beginner

Learning outcomes

Students will be able to:

Explain how sequence works in programming.
Computer Science: Programming
Explain why a program gives the output that it does.
Computer Science: Programming
Identify how and when to use a loop to repeat a set of instructions.
Computer Science: Programming

Requirement:

Write a program that draws a square, starting from point x:0, y:0, with its sides equal to 100 steps. You must use a repeat loop for this challenge.

Testing examples:

There are no testing examples for this challenge.

Languages

Scratch

What it should look like

Click on the green flag to see the expected output of your program.

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Recommended blocks

when green flag clicked

clear

pen down

pen up

go to x: (0) y: (0)

move (100) steps

turn cw (90) degrees

repeat (4)
end

wait (1) secs

Hints

A square has four equal sides and four equal angles (90-degree angles, or right angles).
Block wait () secs waits specified number of seconds, then continues with next block. To be able to see each sides of the square being drawn, use the wait block after turning each angle.

Show Scratch solution

Extra Challenge

Extra challenge #1: Write a program that takes the length of a side of a square as the input, draws the square with the given side and displays its perimeter as the output.