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## Lesson Tip Sheet

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## Keynote Slides

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## Printable Handout

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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.

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Be sure to read the teacher guide prior to running the task. When youâ€™re ready to run the task, use the tabs at the top of the page to navigate through the lesson.

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

## Intentionalityâ€¦

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

## What Do You Notice? What Do You Wonder?

Show students the following video and share the following prompt:

What do you notice?
What do you wonder?

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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## Crafting A Productive Struggle: Prompt

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## 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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## 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.

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

## Lesson Tip Sheet

Download the lesson plan in PDF format so you can keep it handy and share with colleagues.

## Keynote Slides

Download in Apple Keynote format to avoid streaming video and run the lesson smoothly.

## PowerPoint Slides

Download in Microsoft PowerPoint format to avoid streaming video and run the lesson smoothly.