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Python lesson 10: True, False and comparisons

UK version. UK school years and UK spelling. · US version of this lesson

A comparison is worked out to True or False: 5 > 3 is True. A complete 40-minute Python lesson for complete beginners (Year 7, KS3), from Unit 3: Input and decisions. It runs right here in your browser – nothing to install.

Time
40 minutes + 20 min homework
Year
Year 7, KS3 (ages 11–12)
You need
A computer or tablet, paper and a pencil
Marked
Instantly, with explanations

For parents: how to use this lesson

You don't need to know Python yourself. The lesson explains each step on screen, the way Mr Babbage, our Head of Computing, likes it: a worked example first, then a go for your child. Code questions run your child's program in the browser and mark it straight away.

  1. Read what your child will learn together.
  2. Press Start the lesson below. Sit with your child for the teaching and the worked example (about 16 minutes): ask them to say what each line does.
  3. Let them do the practice on their own. When code goes wrong, the error message is a clue – let them read it out and try again before you help.
  4. Finish with the exit questions and the talk question: “Give an example from real life of a comparison with a True or False answer.”
  5. Later that day or the next day: the homework (20 minutes), then a practice test.

Watch out for

  • = and == mean the same. x = 5 stores; x == 5 asks.
  • >= is the same as >. Try 7 >= 7 and 7 > 7.

Miss Lovelace's tip for home: ask your child to explain one line of their program to you in their own words. If they can explain it, they understand it – and every error message is a clue, not a failure.

What your child will learn

We are learning to compare values with == != < > <= >=.

Success looks like

  • I can compare values with == != < > <= >=.
  • I can predict True or False.
  • I can tell = from ==.

Key words

bool · comparison · True · False · condition

What to have ready

  • A device with a web browser (the code runs in the browser – nothing to install)
  • Paper for tracing
  • A keyboard helps for typing code (a tablet or phone works too)

The big ideas (for the adult)

A comparison is worked out to True or False: 5 > 3 is True.

== asks "are these equal?"; = stores a value. They are not the same!

Strings compare exactly: "cat" == "Cat" is False, because capital letters matter.

Worked example

print(10 == 10)

It prints:

True

The lesson, step by step

40 minutes in 5 parts
PartTimeHow it is checked
Starter5 minMarked by Classfern
Teaching input8 minRead, watch and talk
See it, then predict8 minMarked by Classfern
Put it in order, write it, fix it14 minMarked by Classfern
Plenary and exit ticket5 minMarked by Classfern + self-check

The lesson

It runs here on the page. No sign-up and no names – progress is kept only in this browser. Each visit picks a new mix of questions.

Homework

20 minutes: 7 questions – predict what code prints, write or fix a short program, and check the key ideas – then a short reflection. New questions every time, all marked instantly.

Practice tests

All KS3 computing practice tests · All 24 Python lessons

Curriculum

National curriculum in England, computing, key stage 3: pupils should be taught to use 2 or more programming languages, at least one of which is textual, to solve a variety of computational problems; make appropriate use of data structures [for example, lists, tables or arrays]; design and develop modular programs that use procedures or functions; and to understand simple Boolean logic [for example, AND, OR and NOT] and some of its uses in circuits and programming; understand how numbers can be represented in binary, and be able to carry out simple operations on binary numbers [for example, binary addition, and conversion between binary and decimal].

Contains public sector information licensed under the Open Government Licence v3.0.

Our lessons and questions are our own. They are not written or endorsed by any government department, testing agency or exam board. Python is a registered trademark of the Python Software Foundation; Classfern is not affiliated with or endorsed by it.