Task Teacher Guide
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In This Task…
Students will explore the part whole relationship to make a connection to the inverse nature of addition and subtraction while still using a counting on strategy as a focus. Extending the counting on strategy with highlighting counting on from the larger number.
Intentionality…
The purpose of the Day 4 activities is to reinforce key concepts from Day 3. Students will engage in a math talk using the part-whole mat as a tool. The students will be able to practice using the tool in a Sense Making task assessment followed by a game and purposeful practice. There will be lots of opportunities for assessment of counting on during this task and also assessing the part-whole relationship presented through addition.
This lesson will serve to develop a deeper understanding of the following big ideas:
- Addition names the whole in terms of the parts: when the parts of a set are known we call it addition
- The part whole relationship is connected to addition as numbers are composed of two or more parts
- Addition can be used in action (or active) situations (i.e.: joining and separating) and static (or passive) situations (i.e.: part part whole)
- Different addition situations will elicit different strategies
- Number relationships provide the foundation for strategies to help students remember basic facts
- Student estimation of small amounts and understanding of quantity as the amount of objects
- Using the part whole model to understand the unknown parts of a problem. The unknown identified which operation needs to be used to solve the problem
- Provide students an opportunity to visualize a situation then interpret which operation is needed to solve word problems
- Models can be used to connect concrete to abstract
- Explore addition strategies and provide opportunities for students to move from “direct modelling and counting all” to using counting on as a strategy to solve an addition question. Counting on is an important development as students work with bigger numbers, so they don’t have to model both numbers in the question
Math Talk
String of Related Problems
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Visual Number Talk Prompt #1
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Visual Number Talk Prompt #2
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Visual Number Talk Prompt #3
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Visual Number Talk Prompt #4
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Visual Number Talk Prompt #5
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Visual Number Talk Prompt #6
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Spark
What Do You Notice? What Do You Wonder?
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Estimation: Prompt
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Estimation: Reveal
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Sense Making
Crafting A Productive Struggle: Prompt
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During Moves
While Students Are Productively Struggling…
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Student Approach #1: Direct Modelling and Counting All
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Student Approach #2: Counting on using fingers as tracking tool
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Student Approach #3: Counting on using fingers as tracking tool
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Student Approach #4: Part whole mat and using a number line as a tool
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Next Moves
Making Connections
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Reveal
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Purposeful Practice
While Students Are Practicing…
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Purposeful Practice Station #1: Game – Remove Face Cards
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Purposeful Practice Station #2: Game – Part-part-whole Shake and Spill
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Purposeful Practice: Small Group Activities
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Purposeful Practice: Small Group Activities
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Download Editable/Printable Handout
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Resources and Downloads
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Explore The Entire Unit of Study
This Make Math Moments Task was designed to spark curiosity for a multi-day unit of study with built in purposeful practice, and extensions to elicit and emerge mathematical models and strategies.
Click the links at the top of this task to head to the other related lessons created for this unit of study.
Visual Number Talk Prompt #1
Visual Number Talk Prompt #2
Visual Number Talk Prompt #3
Visual Number Talk Prompt #4
Visual Number Talk Prompt #5
Visual Number Talk Prompt #6
What Do You Notice? What Do You Wonder?
Spark Image
Estimation Prompt: Image
Estimation Reveal: Video
Estimation Reveal: Image
Struggle Prompt: Image
Purposeful Practice Stations and Small Group Instruction
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Download Editable/Printable Handout
Become a member to access purposeful practice to display via your projector/TV, download the PDF to upload to your LMS and/or print for students to have a physical copy