• instruction

    Evaluating and Graphing Exponential Functions

    I borrowed this from Sam Shah to use as the introduction to exponential functions. I liked the self-guided aspect of this activity. I’m working on instilling more self-sufficiency in my students and learning to let go of the urge to have each minute of the class accounted for.  I would like to work on clearer directions, however. In the second section of class, I demonstrated the first few folds of the paper because many students in the first section just started trying to find the patterns without folding. Additionally, I would like to be able to guide discussions better on the “questions” and “properties” sections. Unit 3, Lesson 2 (Evaluating and Graphing Exponential…

  • instruction

    Contagion

    Photo Credit: trailers.apple.com We started exponential functions today in IB Math Studies. The students attempted to guess the population of the U.S. and the population of the world. Surprisingly, most students guessed way over (about 2 billion). I showed them a clip of the Contagion movie trailer and had them write down the numbers spoken by Jude Law (so that they’d pay attention to the math rather than just the ominous nature of the movie), then see if the pattern matched up with his prediction of 1 billion deaths in 3 months, like in this MathsPig post. Some students asked “are you doing this to scare us away from bird…