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 shortest?
Ana is shorter than Lena.
Ivy is taller than Kai.
Kai is taller than Lena.
- A: Lena
- B: Ana (the answer)
- C: Kai
- D: Ivy
Why: Put them in order from tallest to shortest: Ivy, Kai, Lena, Ana. So the answer is Ana.
Your turn
Your turn 1 of 3
These are made-up words. If both statements are true, which must also be true?
All quorps are wumps.
All wumps are snibs.
Your turn 2 of 3
These are made-up words. If both statements are true, which must also be true?
All trells are mivs.
All mivs are blips.
Your turn 3 of 3
In a secret code, MINT is written as NJOU. How is CAT written in the same code?
Keep practicing
Grown-ups: Discuss: "Is that always true or just sometimes?" Parent guide
Next lesson: Reading charts and tables