Math · Stage 1
Deduce an order from clues using transitive reasoning (A>B, B>C -> A>C)
Chain two clues together: if the first is bigger than the second, and the second is bigger than the third, the first beats the third — even without checking.
✦ Math📘 Stage 1 · S1⏱ ~10 min🧒 Ages 5–6★ Free to start
I can deduce an order from clues using transitive reasoning (if A > B and B > C then A > C).
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Kavi's Tallest Friend 📏
Kavi knows two clues 🧩: Ben is taller than Ann, and Ann is taller than Cas. Kavi never stood Ben next to Cas — but still hoots, "Ben must be taller than Cas!" How? "Ann is in the middle. Ben beats Ann, Ann beats Cas — so the clues chain up: Ben, Ann, Cas, tallest first!"
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What your child will learn
1One clue compares twoEach clue lines up just two things. Tap the tree and the bush — the tree is taller, the bush is shorter. A clue like "taller than" always points from the bigger one to the smaller one.
2Chain the clues into a line-upClue 1: Ben > Ann. Clue 2: Ann > Cas. Ann shows up in both — she is the middle. Line them up tallest first: position 3 is tallest, position 1 is shortest.
3Longer chains work the sameClues: A > B, B > C, C > D. Follow the shared letters: B links clue 1 and 2, C links clue 2 and 3. The whole chain lines up at once.
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A peek inside
Ben is taller than Ann. Ann is taller than Cas. Who is the tallest?
Ben > Ann > Cas, so Ben is on top
Try this at home: Sam runs faster than Pat. Pat runs faster than Lee. Who is fastest?
Ready to play and learn?
Start the free interactive lesson, or print the handout for screen-free play.
Part of Math · Stage 1 · S1 on KAVI Academy — a secular, whole-child learning platform for ages 5–12.