Math in Python
Intro to Python Programming Grades 9–12 4-day lesson 32 deliverables Help students use Python math to solve problems with costs, groups, time and averages. Students trace the order of operations, compare division operators and write calculations with variables before checking the results. They plan party costs, round an average and turn movie minutes into hours and leftover minutes while finding ticket costs.
● 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?
Students may know the math but choose an operator that gives the wrong kind of result. This lesson connects each operator to a practical task and has students check the answer by hand.
The labs on Day 2 and Day 3, and the activity on Day 4 have online versions that use CodeGrove, our in-browser code lab, in the Number Crunch level. It practices doing math on variables with Python's operators. Every online version comes with a paper version, so no internet is needed. CodeGrove is free, with no accounts or sign-ins.
Number Crunch
Students write three programs that use //, %, *, ** and / on variables, and they explain why each one works.
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 four days, 40 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 four 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
- Number Crunch: students write three programs that use //, %, *, ** and / on variables, and they explain why each one works
- Party Planner: students add up a party's costs, find an average with parentheses, round it and fix a bug ticket
04 Activities
- One Step at a Time: students trace three programs that do math one step at a time, write three more the same way and write what each one prints
- Movie Night: students turn a movie's minutes into hours and minutes and find a ticket cost in Movie Night, and then they take the lesson quiz
05 Assessment
- Exit tickets: quick questions that show who needs more help
- Lesson quiz: 8 multiple-choice questions and 2 written answers about all four days
06 Answer Keys
- 6 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™
- 5 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
- CodeGrove, Number Crunch level: the online version of the labs on Day 2 and Day 3, and the activity on Day 4
- Every online version has a paper version, so no internet is needed
- Free to use, with no accounts or sign-ins
Why teachers love this lesson
Students see each step in mathThey trace calculations in order, then use parentheses to control how a program finds an average.
Division has a job to doStudents choose among /, // and % and use the results to solve time and grouping problems.
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 activitiesStudents can use CodeGrove, our in-browser code lab, on a computer or tablet, and every online version has a paper version that works with no internet.
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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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 Intro to Python Programming 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 intro to Python course 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 use type() to see a value's type, and they know str and bool values. They know Python's naming rules for variables, write comments with # and know that exact output counts, letter by letter.
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 Foundations of Programming course (9007210). The skills map in the lesson shows which standards each day teaches.