# Day 13: It’s OK to use paper and pencil activities!

Today my precalculus students were introduced to Parametric functions. At the beginning of class, we graphed a parametric equation by hand, discussing the resulting ordered pairs and identifying the independent and dependent variables. Then we used the power of technology and dynamic representation, via the Nspire, to graph the same function on the handheld. We traced the function, compared to the table values, explored what the t-interval and the t-step controlled, and switched the functions around in the hopes of deepening their conceptual understanding of a parameter. Students in their groups did additional exploration problems and applications. They were intrigued! Although I would have loved to do a kinistetic activity, I just couldn’t think of one that was powerful enough. I’d love to hear how you introduce parametric functions!

Posted on September 18, 2014, in Uncategorized and tagged functions, parametric equations, precalculus. Bookmark the permalink. Leave a comment.

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