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Rule Keep
Created by Argraide
Updated October 27th, 2026
At a glance
- Staff pick
- Picked by the Argraide team
- Play mode
- 📱 Solo
- Format
- 🧊 3D
- Length
- ⏱ 30 minutes or more
- Subject
- Math
- Grade
- 6
- Curriculum
- Ontario
- Curriculum codes
- B2.2B2.6
About this activity
A 3D valley path winds toward a rune keep. Each wave previews numbered raiders and supply carts; students carve RULE runes (divisible by, factor of, prime, composite, product of n primes, and later two parts fused with AND) on a few choke-point pads. A rune stops exactly the numbers its rule is true for, so the defence plan IS the classification.
What students learn
- B2.2: use the divisibility rules for 2, 3, 4, 5, 6, 8, 9 and 10 to decide whether a number is divisible
- B2.6: use factor trees to write composite numbers as products of primes, and tell primes, composites and 1 apart
- Tell factors from multiples and combine two rules with AND
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