Eureka Math
1st Grade
Module 1
Lesson 12
At the request of elementary teachers, a team of Bethel & Sumner educators met as a committee to create Eureka slideshow presentations. These presentations are not meant as a script, nor are they required to be used. Please customize as needed. Thank you to the many educators who contributed to this project!
Directions for customizing presentations are available on the next slide.
Customize this Slideshow
Reflecting your Teaching Style and Learning Needs of Your Students
Screen A
“pop-out”
Screen B
Icons
Read, Draw, Write
Learning Target
Think Pair Share
Individual
Partner
Whole Class
Small Group Time
Small Group
Personal White Board
Problem Set
Manipulatives Needed
Fluency
Materials Needed
I can solve add to with change unknown math stories using my 5-group cards.
Slam: Partners to 6
Order your cards 0–6 on your desk beginning with 0. I will flash a 5-group card, and you will need to “slam” the card with the partner to 6 (students carefully slap the card on the table).
Now when you hear me snap I want you to say the partners you found.
Continue playing until students have found all possible partners to 6. Then, give them time to play the game with partners.
Number Bond Dash: 6
Application Problem
Tanya has 7 books on her shelf. She borrowed some books from the library, and now there are 9 books on her shelf. How many books did she get at the library?
Explain your thinking in pictures, words, or with a number sentence. Draw a box around the mystery number in your number sentence.
Concept Development
Use the number side of your 5-group cards to help me solve a story. Once upon a time, 5 little bears came out of hibernation.
(Place 5 bear counters above the first addend space on the teacher number sentence template.)
Then, some more bears came out of hibernation. (Bring out mystery box.)
What should we do?
Concept Development
Here’s a blank card for everyone.
Place it in your number sentence to show that this part is a mystery.
Concept Development
At the end, there were 8 little bears out of hibernation. Where should we show that number of bears in our number sentence?
How can we use the 5-group cards to figure out how many more bears came out of hibernation?
With your partner, use your cards to show how many bears are in the box.
Concept Development
How many bears joined the group?
How did you use your 5-group cards to figure this out?
Let’s count on as we point to each dot.
Concept Development
Fiiiiive, 6, 7, 8.
How many more bears came out of hibernation?
Let’s open the box and see how many more bears came out of hibernation! Write the number sentence using the 5-group cards in front of you to help.
Concept Development
This type of a story problem is a mystery change problem because the change that results in the total is a mystery.
4 + ? = 7
This time, I want you to think of a mystery change story with your partner. Try to solve the mystery using your 5-group cards.
Concept Development
9 = 5 + ?
Again think of a mystery change story with your partner. Try to solve the mystery using your 5-group cards.
Problem Set
Debrief
Debrief
Debrief
How are Problem 3 and Problem 5 different? How are they the same?
Debrief
Debrief
Share with your partner an “I can…” statement, based on something you can now do on your own.
For example, “I can make up mystery change problems and write number sentences with sticky notes,” or “I can use 5-group cards to help me solve mystery change problems.”
Exit Ticket