# Number Theory

This math unit on number theory has it all: Definitions Divisibility Rules Prime or Composite Factors Prime Factorization Greatest Common Factor (2 methods!) Least Common Multiple Practice and Enrichment Sheets

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6-8 year olds 1.3 order and compare rational numbers 1.5 number theory concepts (e.g., primes, composites, factors, divisibility ,and multiples) in mathematical problem situations

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Factor Stacking! Number Theory Activity - Very Visual so students can *SEE* what Prime and Composite mean

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This Family Math Night 'What Do You Notice?' activity focused on number theory - odd/even numbers and multiples.

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Another fun Family Math Night 'What Do You Notice?' activity! This one focuses on number theory but anything they notice is accepted - which is why these activities work so well at our K-5 Family Math Night events.

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