This activity encourages students to work independently with a partner to find slope of a line given a graph and given two points. Each row of problems has different problems with the same solution. Students are to complete each of the problems independently and then check with their partner. If their partner has the same solution as them, then they are correct; if not, it is up to the students to figure out who is correct, and who made what mistake.
CCSSM Habits of Mind:
--Reason abstractly and quantitatively
--Construct viable arguments and critique the reasoning of others
--Attend to precision