Loops: Concept Map

≈ 30 min

Concept Map

Organise the vocabulary, quantities and relationships into a connected model.

This extension applies that lens specifically to Loops.

A loop repeats work. A for loop walks over a range or a list:

total = 0
for i in range(1, 11):
    total = total + i
print(total)   # 55

range(1, 11) gives 1,2,…,10 (the stop value is excluded). A while loop repeats as long as a condition holds. Combine loops with if to count or filter.

Code practice

Python Foundations — Concept Map: Use a for loop to add up the numbers 1 to 10 into a variable total (it should end at 55).

python

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Code practice

Python Foundations — Concept Map: Write count_evens(nums) that returns how many numbers in the list nums are even. (A number is even when n % 2 == 0.)

python

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Python Foundations — Concept Map: How many numbers does range(3) produce?

Name the original topic being extended by this concept map lesson.

Which statement is the best evidence-led starting point for Loops: Concept Map?

A loop repeats work. A for loop walks over a range or a list: `` total = 0 for i in range(1, 11): total = total + i print(total) # 55 ` range(1, 11) gives 1,2,…,10 (the stop value is excluded). A while loop repeats **as long as** a condition holds. Combine loops with if to count or filter. range(n) gives 0,1,…,n−1 — that's n` numbers, start

Variables & Types

Strings & I/O

A conclusion needs no observations, calculations or stated assumptions.