Illustrative Mathematics
Operations on the Number Line
A different way to look at integers is on this number line with variables in place of numbers. Learners are to look at different expressions and describe why they think the answer would be positive or negative, depending on the location...
Curated OER
Adding and Subtracting Integers
Middle schoolers explore how to add and subtract integers. In this integer lesson students are broken into groups and participate in an activity that helps them investigate how to add and subtract integers.