This lesson applies practical application of finance and clearly explains a complex topic. Great use of links to help explain and use interactive to gain understanding of topic. Requiring a short essay and research problem checks for understanding and provides a way to rubric lesson. Requiring skills necessary to complete task provides a way to determine students that need extra time to obtain calulator and web research skills. Perhaps providing a hand-out of steps for calucator use would help support students who struggle with multi-step directions.