T2
Find the least common multiple (LCM) of two whole numbers less than or equal to 12
NS.4
Lesson 1
Direct Instruction
Notes
Lists will always work, but can be time-consuming.
The Ladder Method can be used to find the LCM too. Multiply ALL the numbers on the outside: (the numbers on the left and the numbers on the bottom.
Discuss (2 min)
Notes
What is the difference between the GCF and the LCM (compare and contrast)?
My Responsibilities
Due 11/13
1. CYUqs (do some with lists and some with the ladder method):
You are all going to do some of these. But, there are three things for you to keep in mind. First, do your own. Second, you choose where to start. Third, check your work with the students around you, and if you need help, get help. And if someone needs help, give help.
Check answers to make sure you are understanding
2. Be sure that your notes are your notes are up to date:
3. Stuck? Choose to persevere: review your thinking, try different approaches, ask for help, search
Lesson 2
Before discussing your the Check-your-understanding Questions, turn to your neighbor and describe what a multiple is.
When you both agree, take turns showing each other one problem you thought represented the basic idea of how to find a LCM.
Did you notice that sometimes the LCM was simply the product of the two numbers?
But other times, finding the LCM took making a list (or using the Ladder Method).
If you could make up a rule for when to multiply to find the LCM and when to not multiply, what would the rule be?
On the blank side, write your first and last name and U5T2.
1. Find the LCM of 8 and 12
2. Ananya likes to go to Starbucks every 10 days and Anika likes to go every 12 days. Ananya and Anika both went to Starbucks today. After how many days do they go to Starbucks on the same day again?
Lesson 1
Direct Instruction
Notes
Lists will always work, but can be time-consuming.
The Ladder Method can be used to find the LCM too. Multiply ALL the numbers on the outside: (the numbers on the left and the numbers on the bottom.
Discuss (2 min)
Notes
What is the difference between the GCF and the LCM (compare and contrast)?
My Responsibilities
Due 11/13
1. CYUqs (do some with lists and some with the ladder method):
You are all going to do some of these. But, there are three things for you to keep in mind. First, do your own. Second, you choose where to start. Third, check your work with the students around you, and if you need help, get help. And if someone needs help, give help.
Check answers to make sure you are understanding
2. Be sure that your notes are your notes are up to date:
3. Stuck? Choose to persevere: review your thinking, try different approaches, ask for help, search
Lesson 2
Before discussing your the Check-your-understanding Questions, turn to your neighbor and describe what a multiple is.
When you both agree, take turns showing each other one problem you thought represented the basic idea of how to find a LCM.
Did you notice that sometimes the LCM was simply the product of the two numbers?
But other times, finding the LCM took making a list (or using the Ladder Method).
If you could make up a rule for when to multiply to find the LCM and when to not multiply, what would the rule be?
On the blank side, write your first and last name and U5T2.
1. Find the LCM of 8 and 12
2. Ananya likes to go to Starbucks every 10 days and Anika likes to go every 12 days. Ananya and Anika both went to Starbucks today. After how many days do they go to Starbucks on the same day again?