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Using Challenge Based Learning to Teach the Fundamentals of Exponential Equations

Our work is based on an effort to teach the concepts of exponential growth and decay functions using the Challenge Based Learning approach (CBL). The cohort consisted of high-school and middle-school science and math teachers. A unique aspect of this work was that in parallel to teaching the mathematical concepts, the instructors were also explaining how to implement the CBL pedagogy into a middle or high-school classroom. Thus the outcome of the project was a class module that the teachers could take back to their school. The feedback from the cohort was positive with regards to the mathematical concepts and the CBL pedagogy. Two main improvements suggested were to separate the class in two based on mathematical level and to help develop cost efficient activities which could be used in the middle and high schools. Both of these suggestions are currently being implemented into the 2014 classes.