Logic clues
Strategy card
Logic asks what MUST be true, not what might be.
- Step 1: Write each clue in short form (A > B).
- Step 2: Combine clues to make new facts.
- Step 3: Test each answer: is it always true, or only maybe?
- Step 4: Choose the one that must be true.
Tip: "Some" and "all" are different. Read them carefully.
Worked example
Who is the second heaviest?
Milo is lighter than Ella.
Ella is lighter than Omar.
Gia is heavier than Omar.
- A: Gia
- B: Omar (the answer)
- C: Milo
- D: Ella
Why: Put them in order from heaviest to lightest: Gia, Omar, Ella, Milo. So the answer is Omar.
Your turn
Your turn 1 of 3
In a secret code, DESK is written as CDRJ. How is LOG written in the same code?
Your turn 2 of 3
Who is the tallest?
Gia is shorter than Milo.
Nora is taller than Milo.
Finn is taller than Nora.
Your turn 3 of 3
If both statements are true, what can you conclude?
If something is a snib, then it is tiny.
The mystery thing is tiny.
Keep practicing
Grown-ups: Discuss: "Is that always true or just sometimes?" Parent guide
Next lesson: Reading charts and tables