Teacher: Subject/Grade: Math/6 Date: 7/11/06
Framework: 6.N.8 Apply number theory concepts – including prime and composite
numbers, prime factorization, greatest common factor, last common multiple, and
divisibility rules for 2,3,4,5,6,9, and 10 – to the solution of problems.
Objective (what Students will find write numbers that have common factors adjacent to
should students
know and be able each other in a 3x3 grid while playing “Common Factors Match”.
to do)
Blank 3x3 grid
Materials List of numbers to be placed
Multiplication Chart
Factors, product, divisible, common factor
Vocabulary
Students list all of the factors of 36.
Questioning: “What strategies did you use to find all of those factors? How
Launch
do you know you have them all? Is there another possible way to find the
factors of 36?”
Give students two numbers and ask them to write all of the factors and circle
the common factors.
Show students the grid and the list of numbers:
Explore (2,3,5,6,9,10,12,15,18,20,21,24,27,30,35,36)
The students’ objective is to place the numbers in the box so that each
number is surrounded by numbers that share a common factor.
Questioning: “How did you start this task? Where there certain numbers that
were better to start with? What was your strategy to find the factors?”
Summarize
Homework
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