August 29September 28
Grade 5 Math Focus: Number Theory
TASS: Flexibility, Collaboration, Synthesis, Metacognition, Elaboration, Intellectual
Risk Taking, Evaluation, Effort/Motivation/Persistence
What question do we ask ourselves?
How can a number be broken down into its smallest
factors?
What words do we need to know to master the
objectives?
factor
multiple
product
prime
composite
prime factorization
greatest common factor (GCF)
rules of divisibility
least common multiple (LCM)
How will we master the objectives?
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Use multiplication facts
Use division facts
Use factor trees
Use a factor rainbow
What do we need to know and be able to do?
 Identify prime and composite numbers less than
100
 Find the prime factorization of a composite number
 Find the greatest common factor (GCF) of two
numbers
 Find the least common multiple (LCM) of two
numbers
 Identify and use rules of divisibility
 Show number relationships by using number
theory, prime numbers, factors, multiples and rules
of divisibility
What resources will we use?
Multiplication chart
Hundred chart
Calculator
Flash Cards
Number Line
FASTT math
Study Island (www.studyisland.com)