Trace the loop: what is printed?: coding worksheet for Grades 6–7, page 1 preview

Coding worksheet · Computers & Digital Literacy

Trace the loop: what is printed? · Grades 6–7

Read 6 short Python programs about for and while loops and work out by hand what each one prints or the final value of a variable. Builds careful code tracing.

Grades 6–7 · ages 11 to 13
Easy
25 to 35 minutes
1 page
Free

The answer key is a separate page for grown-ups. Sign in to download it.

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The programs to trace

Directions: Trace each program line by line without a computer. Keep a note of every variable as it changes, then write exactly what the program prints or the final value.

1 What is printed?
1 nums = [3, 5, 9]
2 for i in range(len(nums)):
4 print(nums)
2 What is printed? Write each line.
1 for i in range(3, 6):
3 What is printed?
1 n = 34
2 steps = 0
3 while n > 1:
5 steps += 1
6 print(steps)
4 What is printed?
1 def double(n):
2 return n * 2
3 total = 0
4 for i in range(1, 5):
5 total += double(i)
5 What is printed?
2 n = 3
3 for _ in range(4):
4 total += n
5 n += 2
6 What is printed?
2 for i in range(1, 7):
3 if i % 2 == 0:
4 total += i
5 print(total)

What your child practices

Your child builds careful code tracing. The skill is “Loops”: use repetition to shorten programs.

Grades and ages: Grades 6–7, ages 11 to 13
Time: About 25 to 35 minutes
Subject: Computers & Digital Literacy
Level: Easy for Grades 6–7
Answer key: Yes, for grown-ups who sign in
Printing: 1 page, US Letter or A4, low-ink option
Updated: October 15, 2026

How to use it

Work through the first program together, one line or arrow at a time. Then let your child work through the rest, showing their thinking on the page. It is one of the easier sheets for Grades 6–7, good as a warm-up or a first look at the skill.

An answer key comes with it as a separate page that grown-ups download after signing in.

Tip for grown-ups: Have your child write each variable's value beside its line as they trace.

Done on paper? A grown-up can record it on the child's page in PlayOwl; downloading alone doesn't count as finished.