Function Transformations and the Desmos Activity Builder

In my classroom, the Desmos® calculator has been a game-changer for student understanding of relationships between graphs and algebraic representations of functions. We use this beautifully designed website every day. Lately, the Desmos class activity site ( and the new Activity Builder tool have proven especially useful by allowing me to provide my students with opportunities to struggle productively, create, error-check, and think deeply to learn mathematics. Activity Builder is the easiest tool I have found to set up and to run an activity that promotes these ideas in your classroom.


Edited by Robert Lochel Technology Tips offers a forum for innovative uses of technology in the teaching and learning of mathematics; it appears in every issue of Mathematics Teacher. Manuscripts for the department should be submitted via For more information, visit

Department editors Heather Lynn Johnson,, University of Colorado Denver; and Steve Phelps,, Madeira High School, Cincinnati, Ohio; and Robert Lochel,, Hatboro-Horsham High School, Horsham, Pennsylvania

Contributor Notes

Jon Orr,, is a math curriculum leader and high school math teacher in Chatham, Ontario.

(Corresponding author is Orr
The Mathematics Teacher


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