Unit 1, Lesson 16
Compare and Contrast
Extra Support Materials for Algebra 1
16.1
Warm-up
Math Talk: Measuring Up
to see where instructional routines fit in your journey.
Materials
None
Activity Narrative
This Math Talk focuses on finding distances on a ruler. It encourages students to think about the difference between two numbers and to rely on what they know about fractions to mentally solve problems. The strategies elicited here will be helpful later in the Algebra 1 lesson when students use distances like these to collect data.
To find distances on a ruler, students need to look for and make use of structure (MP7).
Launch
Tell students to close their books or devices (or to keep them closed). Reveal one problem at a time. For each problem:
-
Give students quiet think time, and ask them to give a signal when they have an answer and a strategy.
-
Invite students to share their strategies, and record and display their responses for all to see.
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Use the questions in the activity synthesis to involve more students in the conversation before moving to the next problem.
Keep all earlier problems and work displayed throughout the talk.
Action and Expression: Internalize Executive Functions. To support working memory, provide students with sticky notes or mini whiteboards.
Supports accessibility for: Memory, Organization
Supports accessibility for: Memory, Organization
Activity
NoneActivity Synthesis
The goal of this discussion is to review students’ strategies for finding the distance between two points on a ruler.
Ask students to share their strategies for each problem. Record and display their responses for all to see. To involve more students in the conversation, consider asking:
- “Who can restate
’s reasoning in a different way?” - “Did anyone have the same strategy but would explain it differently?”
- “Did anyone solve the problem in a different way?”
- “Does anyone want to add on to
’s strategy?” - “Do you agree or disagree? Why?”
- “What connections to earlier problems do you see?”
MLR8 Discussion Supports. Display sentence frames to support students when they explain their strategy. Examples:
Advances: Speaking, Representing
- “First, I
because .” - “I noticed
, so I .”
Advances: Speaking, Representing
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