In the lesson linked below, students will use tiles and written sentences to understand the concept of subtraction of integers. They will be able to add zero pairs to complete simple subtraction problems. Algebra tiles are needed for this lesson.
Lesson guidelines: http://auhsdmath.pbworks.com/w/file/fetch/60111523/5_0%20Teacher%20DirectionsSubInt%283%29.pdf
Handout: http://auhsdmath.pbworks.com/w/file/fetch/60111524/5_1%20SubtractingIntTiles%283%29.pdf