Mathist

Students are given two mapping diagrams, three graphs, and four real-world scenarios and asked to classify each as a function or not a function. For each function, students are asked to describe the domain and range. For each non-function, students are asked to explain why it is not a function. This can be used for in-class practice, exit ticket, homework assignment, or assessment. An answer key is included.

This is an introductory lesson that introduces big ideas such as domain and range, intervals of increase and decrease, and maximum values in addition to vocabulary such as inclusive and exclusive. This lesson is an excellent basis for small-group-to-large-group discussion and can be used to be sure that conceptual understanding is secure in advance of introducing or reviewing notation for communicating domain, range, and intervals of increase and decrease. A teacher guide with answers and discu