What I love about using calculator technology in my teaching is the “Power of Visualization” and the opportunity to examine math through different lenses. The multiple representations available on TI graphing calculators—numeric, algebraic, graphical, geometric, statistical—allows me to push my students to approach problems in more than one “right way.” By connecting these environments and making student thinking visible when we dig into a mathematical situation, we support students in productive struggle and deepen their understanding.*
Read my post on the TI BulleTIn Board Blog for two scenarios in which my students and I pursue multiple pathways to show and make sense of the mathematics at hand (with demonstration videos!)
Read the entire post at the above link, and here is a quick summary:
1. Riding the Curves and Turning the Tables: studying quadratic and polynomial functions.
VIDEO 1 Using different forms of quadratic functions to reveal graph features.
VIDEO 2 Using the graph-table split screen to see numerically what is happening at key points.
2. Absolute Certainty: solving absolute value equations and inequalities.
VIDEO 3 Using the graphical environment to support an algebraic solving procedure.
*Connecting mathematical representations and supporting productive struggle are two of the high-leverage mathematical teaching practices discussed in NCTM’s Principles to Actions: Ensuring Mathematical Success for All (2014).