Output That Reads Well
Python Programming 2 Grades 9–12 3-day lesson 25 deliverables Teach students to make Python output line up and read well. Students match three ways to print the same price tag for a hardware store, then use width and alignment in a format spec. They write a row function and print a whole receipt with a header, columns that line up and a big total with commas. Escape codes add new lines and tabs.
● Instant download · Lifetime access · Editable & print-ready
Print + digitalPDF, PowerPoint, Word & Google
Answer keysA key for every page
Built-in assessmentExit tickets + lesson quiz
45-minute daysEvery day planned and timed
Short coding levels practice this lesson in CodeGrove, our code lab that runs in the browser. Students write the program, run it and check it, with no account and nothing to install. Use them with the lesson or as practice later.
See the levelsWhat does this lesson cover?
Printed columns that do not line up look sloppy and are hard to read. This lesson teaches format specs for width, side and decimals. Students then use a row function so every row of a receipt matches its header.
The try-it on Day 1, the lab on Day 2 and the quiz task on Day 3 run online in CodeGrove, our in-browser code lab, so students need a computer or tablet on those days. The Receipt Printer level practices lining up output with format specs: a row function, a whole receipt and a big total with commas. CodeGrove is free, with no accounts, sign-ins or installs.
Receipt Printer
Students write a row function, print a receipt and show a big total with commas in CodeGrove.
Everything that's included
00 Start Here
- READ FIRST: every file in the lesson and when you use it
- Teacher Guide and Pacing: the plan for each day, what to print and how to grade
- Skills map: which standards each day teaches
01 Present
- One editable PowerPoint deck for all three days, 23 slides, with speaker notes
- Slide script: the speaker notes, printed
- Bell ringers: a short warm-up for each day
02 Student Handouts
- Guided notes: one packet for all three days, in PDF and editable Word. Students fill in the blanks during the slides, with the word bank on the page
- Vocab slip: the lesson's words and what they mean, on one page
03 Labs
- Receipt Printer: students write a row function, print a receipt and show a big total with commas in CodeGrove
04 Activities
- Same Output, Three Ways: students match lines that print the same thing and write what two width lines print, on paper with computers closed
- Quiz task: students print a price tag that lines up in CodeGrove, working alone
05 Assessment
- Exit tickets: quick questions that show who needs more help
- Lesson quiz: 8 multiple-choice questions and 2 written answers about all three days, on paper
06 Answer Keys
- 5 answer key files: a key for each day (its bell ringer, notes and exit ticket) and the activity and lab keys, plus the quiz key
Digital: Google Forms™ + Google Slides™
- 4 Google Forms™ of the exit tickets and the quiz, ready to copy into your Drive
- The multiple choice grades itself, and you grade the written answers
- A Google Slides™ copy of the deck, with the same slides and speaker notes, for Google Classroom™
- Give a Form that asks students to read code only on school-managed Chromebooks in locked mode, and use the paper version on other devices
Online: CodeGrove
- In CodeGrove: the lab on Day 2 (Receipt Printer) and the quiz task on Day 3, on a computer or tablet for each student
- A try-it on Day 1: students practice the new code in CodeGrove, and nothing is turned in
- Free to use, with no accounts, sign-ins or installs
Why teachers love this lesson
A format spec controls the space for each valueStudents set a value's width, its side and its decimals. Prices and names then line up in columns.
One row function keeps a receipt tidyStudents write a row function once and call it for every item. The header uses the same widths, so the whole receipt lines up.
Print and digitalEvery page is a print-ready PDF, and the Google Forms™ and Google Slides™ let you teach the same lesson in Google Classroom™.
Real online labsStudents write and run real Python in CodeGrove, our in-browser code lab, on a computer or tablet, with no accounts or installs.
A key for every pageEvery day has its own answer key, and every written question has a sample answer and what to look for.
Every day fits a 45-minute classEach day's plan is timed activity by activity against real reading and writing speeds.
What Teachers Say
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Leave a reviewQuestions teachers ask
How do I get the files after I buy?
Instant download right after checkout: PowerPoint and Word files you can edit, print-ready PDFs, and links that copy the Google Forms™ and Google Slides™ into your Drive.
Can I buy the whole unit or course instead?
Yes. This lesson is part of the Unit 2 bundle and the complete Python Programming 2 course. Both cost less than buying the lessons one at a time.
Is this AP Computer Science?
No. It is a full-year, non-AP second course in Python for grades 9 to 12. For AP, see our AP Computer Science A and AP CSP courses.
What should students know before this lesson?
Students can put a value in an f-string, show money with :.2f and loop over a list. They know that input() always gives text.
Do students need computers?
Yes, on the CodeGrove days. Each student needs a computer or tablet that's online, and CodeGrove needs no account or install. The bell ringers, notes, exit tickets and quiz are on paper.
What formats are the files in?
Every page is a print-ready PDF. The slides are an editable PowerPoint and the guided notes an editable Word file. The exit tickets and the quiz also come as Google Forms™, and the deck as Google Slides™.
Which standards does it cover?
Written for Florida's Intermediate Programming course (9007220). The skills map in the lesson shows which standards each day teaches.