Python Programming 2 Unit 2: Strings and Safe Input
Python Programming 2 Unit 2 cover, Strings and Safe Input
UNIT BUNDLENEW · GRADES 9–12

Python Programming 2 Unit 2: Strings and Safe Input

The complete Unit 2, all 7 lessons

Guide students through writing Python programs that handle text and bad input safely. Students slice and clean strings, line up output with format specs and write check functions that keep asking until an answer is good. They catch errors with try and except, build and crack a shift cipher, see how attacks use bad input and finish with a sign-up checker.

7 lessons · 22 days Unit review + test Print + digital Google Forms + Slides
$50

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20 coding levels come with this

See the levels

Short coding levels practice the unit's lessons in CodeGrove, our code lab that runs in the browser. Students write each program, run it and check it, with no account and nothing to install. Use one with the lesson or as practice later.

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What's in Every Lesson

All 7 lessons follow the same folder system, so you learn the layout once and teach the whole unit.

Slides + Speaker Notes
One editable deck per lesson, with notes that say what to say.
Guided Notes
Fill-in notes that follow the slides, with a word bank.
Activities + Labs
16 activity sheets and 10 lab sheets, with the labs in CodeGrove.
Bell Ringers + Exit Tickets
A warm-up to open each day and a quick check to close it.
Lesson Quizzes
Multiple choice and written answers, in 6 of the 7 lessons.
Unit Project
A Sign-Up Checker, graded with a rubric.
Answer Keys
A key for every day, with sample written answers.
Google Forms + Slides
33 Google Forms and 8 Google Slides decks.

See the Actual Pages

Real pages from Unit 2, the same clean design in every lesson.

Guided notes

Notes that follow the slides

Students fill in the blanks during the slides, with the word bank right on the page.

  • ✓ PDF and editable Word
  • ✓ A key for every day
Lesson 2.2 guided notes, page 1
Labs

Real Python in every lab

Students work through labs like Receipt Printer in CodeGrove, our in-browser code lab, then write their code, the output and a why answer on the lab sheet.

  • ✓ No accounts or installs
  • ✓ A key for every sheet
Lesson 2.2 Receipt Printer lab, page 1
Unit test

A review and test to close the unit

The bonus folder has a review lesson, the unit test and a Form B retake, each with a Google Form and a key.

  • ✓ Word copies of both tests
  • ✓ Pacing guide and standards crosswalk
Unit 2 test, page 1
Slides

Slides that run every day

Each lesson has one editable deck. Every day starts at its own Day slide, and the speaker notes say what to say.

  • ✓ Editable PowerPoint
  • ✓ Google Slides™ for Google Classroom™
Unit 2 lesson title slideUnit 2 content slide

The 7 Lessons in Unit 2

2.1
Slices and String Methods
5 days
2.2
Output That Reads Well
3 days
2.3
Check the Input: Ranges, Formats and Characters
3 days
2.4
Try, Except and Error Codes
4 days
2.5
Secret Codes: A Cipher
3 days
2.6
How Attackers Use Bad Input
2 days
2.7
Build: A Sign-Up Checker
2 days
Unit 2 Bonus folder
Unit review + test
Form B retake test
Pacing guide
Standards crosswalk
Vocabulary Bingo

This unit is also part of the complete Python Programming 2 course: all 8 units plus the Course-Wide Bonus folder.

Why Teachers Choose It

Students check input before they trust it

They write range, format and character checks, catch errors by name and return error codes. No answer can then crash the program.

Text work leads to real tools

Students use strings to build a receipt, a shift cipher and a sign-up checker. A partner tests the checker with bad answers.

Print and digital

Every page is a print-ready PDF, and the Google Forms™ and Google Slides™ let you teach the same unit in Google Classroom™.

Every day fits a 45-minute class

Each day's plan is timed activity by activity against real reading and writing speeds.

What Teachers Say

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FAQ

What's in the Unit 2 bundle?
All 7 lessons, each with slides, guided notes, exit tickets and answer keys, plus 16 activity sheets, 10 lab sheets in 6 lessons, a quiz in 6 lessons and the unit project. The Unit 2 Bonus folder adds a review, a unit test with a Form B retake, a pacing guide, a standards crosswalk and Vocabulary Bingo.
Can I buy single lessons or the whole course?
Yes. Each lesson sells on its own, and this unit is part of the complete Python Programming 2 course, which costs less than buying the eight units.
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.
How is it delivered?
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.
Which standards does it cover?
Written for Florida's Intermediate Programming course (9007220). Each lesson's skills map and the unit's standards crosswalk show which standards it teaches.
Do students need computers?
Yes, on lab days. The labs and quiz tasks run online in CodeGrove, our in-browser code lab, so each student needs a computer or tablet. CodeGrove needs no account or install.

Want the whole Python Programming 2 course?

Unit 2 is one of 8. Get the full year for less than the eight units cost separately.

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