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Task Teacher Guide

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Bowling Pins - How Many Pins?


Spark


Sense Making


During Moves


Next Moves



Resources and Downloads

Lesson Tip Sheet

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Printable Handout

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Explore The Entire Unit of Study

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Task Teacher Guide

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Bowling Pins - How Many Pins?

In This Task…

Students will explore teen numbers as being 10 and some more.

Intentionality…

In this task, students will compose teen numbers by seeing them as ten and some more. Teen numbers are the first double digit numbers that students use and are a transitional phase to understand our base ten system of numbers. The place value system demonstrates that the teen numbers are composed of a ten and some ones.

Big ideas of the unit:

  • Understanding hierarchical inclusion allows for flexible composing and decomposing of numbers
  • Place value in relation to teen numbers
  • Addition names the whole in terms of the parts: when the parts of a set are known we call it addition
  • Different addition situations will elicit different strategies
  • Number relationships provide the foundation for strategies to help students remember basic facts
  • Commutative and Associative property of addition can be used to help learn facts
  • Models can be used to connect concrete to abstract

Spark

What Do You Notice? What Do You Wonder?

Show students the following video and share the following prompt:

Then, ask students:

What do you notice?
What do you wonder?

working with teen numbers

Allow students some time to think about what they just watched. They can turn and talk to a neighbour for 60 seconds and then allow them to share with the entire group. Be sure to write down these noticings and wonderings on the blackboard/whiteboard, chart paper, or some other means to ensure students know that their voice is acknowledged and appreciated.

Some of the noticing and wondering that may come up includes:

  • I notice a bowling ball hitting some bowling pins.
  • I notice that some pins did not fall down.
  • I notice that the player threw a strike.
  • I notice that some pins fell over from another lane.
  • I wonder how many pins fell.
  • I wonder how many pins are still standing.

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 to track

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Student Approach #3: Counting on using a number line to track

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Student Approach #4: Teen number known fact

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Next Moves

Consolidation: Making Connections

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Reveal

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Next Steps to Support Working With Teen Numbers

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Provide students an opportunity to reflect on their learning by offering these consolidation prompts to be completed independently.

Consolidation Prompt #1:

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Consolidation Prompt #2:

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We suggest collecting this reflection as an additional opportunity to engage in the formative assessment process to inform next steps for individual students as well as how the whole class will proceed.

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Resources and Downloads

Lesson Tip Sheet

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Videos & Images

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Keynote Slides

Hot Chocolate Task Screenshot Images.003Download in Apple Keynote format to avoid streaming video and run the lesson smoothly.

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PowerPoint Slides

Hot Chocolate Task Screenshot Images.004Download in Microsoft PowerPoint format to avoid streaming video and run the lesson smoothly.

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Printable Handout

Download/Edit the handout so you can keep it handy and share with colleagues.

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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.

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