← Class 4 unitsComputational Thinking
Class 4
Chapter 3: Patterns Around Us
Numbers and shapes often follow rules. If we can spot the rule, we can predict what comes next — that's the heart of computational thinking.
Learning outcomes
- Recognise and extend numeric and visual patterns
- Reason with odd/even properties
Activities
- Coin-flip magic on a 5x5 grid
Worked examples
Read through these first, then try the practice below.
Example 1 — Continue the pattern
What comes next? 2, 4, 6, 8, ?
Solution: Each number increases by 2, so the next one is 10. The rule is 'add 2 each step'.
Example 2 — Odd vs even check
Is the sum 7 + 4 odd or even?
Solution: Odd + even = odd. So 7 + 4 = 11 is odd. (You can also just compute it.)
Self-do practice
Question 1 of 3 · Score 0/0What comes next? 1, 3, 5, 7, ?
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