NY Next Generation Math NY-4.OA.4
The Standard
Find all factor pairs for a whole number in the range 1–100. Recognize that a whole number is a multiple of each of its factors. Determine whether a given whole number in the range 1–100 is a multiple of a given one-digit number. Determine whether a given whole number in the range 1-100 is prime or composite.
New York State Next Generation Mathematics Learning Standards
Teacher's field guide
What This Standard Means
What Students Need to Do
- Students find every factor pair of a whole number from 1 through 100. They identify multiples and determine whether numbers are prime or composite.
What Mastery Looks Like
- The student lists all factor pairs of 36 without omissions and explains why the list is complete. The student classifies a number as prime or composite using its factors.
Common Misconceptions
- Students may list factor pairs twice or stop before finding all pairs. They may call 1 prime or confuse factors with multiples.
How to Assess It
- Ask students to list all factor pairs of 42, decide whether 42 is a multiple of 7, and classify 43 as prime or composite.
Lesson moves
Ways to Teach It
Arrange 36 tiles into every possible rectangle and record each factor pair once.
Ask students why 1 is neither prime nor composite.
Play Factor Pair Hunt with number cards from 1 through 100.
Find possible row arrangements for 48 chairs and connect each arrangement to a factor pair.
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