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This lesson unit is intended to help teachers assess how well students are able to understand and use directed numbers in context. It is intended to help identify and aid students who have difficulties in ordering, comparing, adding, and subtracting positive and negative integers. Particular attention is paid to the use of negative numbers on number lines to explore the structures: starting temperature + change in temperature = final temperature final temperature Đ change in temperature = starting temperature final temperature Đ starting temperature = change in temperature.
Numbers and Operations
Lower Primary, Upper Primary, Middle School, High School
Kindergarten, Grade 1, Grade 2, Grade 3, Grade 4, Grade 5, Grade 6, Grade 7, Grade 8, Grade 9, Grade 10, Grade 11, Grade 12
Material Type:
Assessment, Lesson Plan
Shell Center for Mathematical Education
Provider Set:
Mathematics Assessment Project (MAP)
Date Added:
Creative Commons Attribution Non-Commercial No Derivatives
Media Format:
Downloadable docs, Text/HTML


Lehua HIDOE on Aug 03, 01:40am

This is a lesson where students can investigate the process of adding or subtracting integers. The lesson comes with many resources like a Pre-Assessment, activity templates, and detailed lesson plans. It also has a Powerpoint to match the lesson. It addresses CCSS: 7.NS.1: Apply and extend previous understandings of operations with fractions to add, subtract, multiply, and divide rational numbers. Although the lesson suggests 2-3 days. It has taken my class more like 3-4 days to do these types of investigations. I would suggest giving the Pre-Assessment ahead of time to your class so you can grade it before starting the activities.



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