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T4T Representations for Subtraction within 20
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CC BY-NC-SA
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This resource is part of Tools4NCTeachers.

This file contains strategies and representations for subtraction problems within 20. The images in this file help teachers better understand ways to record strategies on the board and/or anchor charts.

Subject:
Mathematics
Material Type:
Diagram/Illustration
Reference Material
Teaching/Learning Strategy
Date Added:
07/11/2019
T4T Using Decomposition to Subtract
Conditional Remix & Share Permitted
CC BY-NC-SA
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This resource is part of Tools4NCTeachers.

The purpose of this lesson is to provide an opportunity for students to solve a subtraction problem that requires regrouping. It explores the idea of decomposing numbers through regrouping. Ideally, this lesson should span over 2-3 days to allow students time to fully explore this critical concept.

Subject:
Mathematics
Material Type:
Lesson
Date Added:
07/15/2019
TI-15 Calculator Training
Unrestricted Use
CC BY
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This video demonstrates the functions of the TI-15 calculator. It may be used as a professional development for teachers, or for training students. It is not recommended that the video is shown to students in its entirety. If you scroll down to the comments section under the video, time markers for each function are provided. Click on the time markers to go directly to that specific function.

Subject:
Mathematics
Material Type:
Activity/Lab
Diagram/Illustration
Interactive
Teaching/Learning Strategy
Author:
Dawne Coker
Date Added:
06/28/2020