Small-group support
A signed change tells direction, not just distance.
A temperature starts at -4 and changes by 9.
A signed change tells direction. Positive means rise or move right. Negative means fall or move left. The result is the ending position, not the total distance traveled unless the question asks for distance.
Problem 1 of 4. A short entry task, a model, guided examples, then a new independent try. Frames are optional.