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Coding with Python · course sample

Intro to Coding with Python

Learn Python fundamentals through small, readable programs, then plan a simple quiz project. This is a starting point for exploring software engineering, not a full professional curriculum.

Grades 6–12 · accounts 13+6 chapters · 18 lesson goalsRead-only · no account needed
About this read-only sample

Authored illustrative samples. These static, read-only outlines and examples were created for this website, not extracted from production courses. They have not been teacher-reviewed and are not a verified Florida curriculum.

Grade ranges describe the material, not account eligibility. Younger-grade samples are public and read-only; accounts require ages 13+. Children under 13 should not sign up or submit personal information.

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The full sample outline

Start with the foundations, then build on one idea at a time.

  1. Chapter 1

    Variables and data types

    Store values and understand the differences between common kinds of data.

    1. 1

      Names and assignment

      Explain how assigning a value changes what a variable refers to.

    2. 2

      Strings, numbers, and booleans

      Choose a suitable data type and recognize simple type errors.

    3. 3

      Expressions and output

      Evaluate an expression and predict a print statement's output.

  2. Chapter 2

    Conditions

    Make a program choose a path based on a clear test.

    1. 1

      Comparisons

      Distinguish assignment from equality and evaluate a comparison.

    2. 2

      If, elif, and else

      Trace which branch runs for a given input.

    3. 3

      Combine conditions

      Use and, or, and not in small, readable decisions.

  3. Chapter 3

    Loops

    Repeat a useful action while tracking how state changes.

    1. 1

      For loops and ranges

      Predict the values produced by a simple range.

    2. 2

      While loops

      Identify a stopping condition and avoid a loop that never terminates.

    3. 3

      Counters and accumulators

      Trace a running count or total one iteration at a time.

  4. Chapter 4

    Functions

    Give a small task a name and a clear input-output contract.

    1. 1

      Define and call

      Explain the difference between defining a function and running it.

    2. 2

      Parameters and return values

      Pass an argument and distinguish returning a value from printing it.

    3. 3

      Test a function

      Check ordinary and boundary examples against an expected result.

  5. Chapter 5

    Lists

    Work with an ordered collection of values.

    1. 1

      Create and index a list

      Use zero-based indexes without confusing them with the list's length.

    2. 2

      Change a list

      Predict the effect of adding or replacing an item.

    3. 3

      Iterate through items

      Process each item while keeping the purpose of the loop clear.

  6. Chapter 6

    Quiz project

    Bring the fundamentals together in a small, local practice program.

    1. 1

      Plan questions and answers

      Represent a small authored question set without collecting personal data.

    2. 2

      Check answers and keep score

      Combine a loop, a condition, and a function to update a score.

    3. 3

      Test and improve

      Try correct, incorrect, and differently formatted answers and explain the program's limits.

Let's work through an example

Trace a small answer counter

This Python snippet counts how many items equal the string yes. Read it without running it: what will it print?

answers = ["yes", "no", "yes"]
score = 0
for answer in answers:
    if answer == "yes":
        score += 1
print(score)
  1. 1

    Start with score = 0. The for loop visits each string in the list, in order, using answer as the current item.

  2. 2

    The first item matches yes, so the score becomes 1. The second item is no, so the condition is false and the score stays 1.

  3. 3

    The third item matches yes, so the score becomes 2. The final print is outside the loop and prints 2 once.

The idea to keep: Trace one iteration at a time. This counts exact matches to a string; it is not a complete quiz or a general way to judge an answer's correctness.

Check your thinking · read-only quiz

What does len(["red", "blue", "green"]) return in Python?

Choose an answer in your head, then open the explanation. Nothing is submitted, graded, or saved.

  1. A.2
  2. B.3
  3. C.0
  4. D.7
Reveal answer and explanation

Answer B: 3

len returns the number of items in the list, which is 3. The last item's index is 2 because Python indexes start at zero; that index is not the same as the length.