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Grade 7 · Prime Factorization

Prime Factorization — Classroom Resources

A classroom-ready sequence of visual explanations, historical stories, puzzles, and stable deep links for teaching Prime Factorization. Move from a short warm-up to hands-on exploration and an optional extension.

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Copy 6 warm-up, exploration, and extension links straight into a worksheet, message, or LMS.

Classroom preset · A full-screen historical map preset for Prime Factorization, centered on Euclid.

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Warm-up

The opening five minutes — a scene that sparks curiosity

Problem storyGoldbach Conjecture — Is Every Even Number a Sum of Two Primes?

Open with Goldbach Conjecture — Is Every Even Number a Sum of Two Primes?. Ask students what they notice and what question the resource raises before introducing the formal idea.

Explore

Core lesson — students manipulate, notice, and explain

ConceptPrime Numbers

Let students explore Prime Numbers, then ask them to describe the pattern, argument, or representation in their own words.

MathematicianEratosthenes

Let students explore Eratosthenes, then ask them to describe the pattern, argument, or representation in their own words.

Extend

Extension or assignment — for students ready to go further

Open problemTwin Prime Conjecture — Do Prime Pairs Persist Forever?

Use Twin Prime Conjecture — Do Prime Pairs Persist Forever? as an extension or assignment that connects the lesson to a broader mathematical story.

ConceptPrime Number Theorem

Use Prime Number Theorem as an extension or assignment that connects the lesson to a broader mathematical story.

Cinematic journeyRiemann Hypothesis — A 165-Year Hunt

Use Riemann Hypothesis — A 165-Year Hunt as an extension or assignment that connects the lesson to a broader mathematical story.

Curriculum alignment

🇰🇷 Korea National Mathematics Curriculum (2022 Revision) (Ministry of Education Notice 2022-33, Appendix 8) Framework. The 2022 revision is being introduced by grade from 2024 through 2027. Grade placement, unit names, and achievement codes follow the official notice; official standard statements are preserved in Korean.

  • [9수01-01]Official achievement statement (Korean original)
  • [9수01-02]Official achievement statement (Korean original)
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