Programming Basics: Read a Tiny Program

Trace a drawing program without skipping instructions.

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5 questions0m 0s

Learn the skill

A program is a set of instructions a computer can follow. Our drawing plan is plain-language practice, not code to paste into a computer. Start with a blank page and carry out each instruction in order.

Worked example

The plan says draw a circle, add a dot inside, then add a line below. After the second instruction the circle and dot exist, but the line does not yet exist.

Step 1 draws a circle. Step 2 adds a dot inside the circle. Step 3 adds a line below. Each picture shows the complete drawing after that step.

Would you believe it?

Computer science can be explored without a computer. Paper, cards and puzzles can help learners practice giving instructions and reasoning about what happens next.

University of Canterbury: CS Unplugged

Question 1 After step 2, which parts are drawn? Dot and line only Only a circle Circle and dot

Question 2 How many drawing instructions are in the plan? 4 3 2

Question 3 If step 3 is missing, what part is missing? The line below The circle The dot inside

Question 4 Which instruction is more precise? Make it nicer Do the thing Add one dot inside the circle

Question 5 How can you check the plan? Skip to the last step Follow one step at a time Guess only from the title

Review your work

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Complete the questions to review each answer.

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