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Exploring exponential functions in cell growth and zombie apocalypse simulations

Exploring exponential functions in cell growth and zombie apocalypse simulations. Emma Stumpf-- Biomedical Engineering Kings High School, 9 th grade Algebra. RET is funded by the National Science Foundation, grant #EEC - 1404766.”. Unit Overview. Topic: Exponential Functions. Common Core

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Exploring exponential functions in cell growth and zombie apocalypse simulations

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  1. Exploring exponential functions in cell growth and zombie apocalypse simulations Emma Stumpf-- Biomedical Engineering Kings High School, 9th grade Algebra RET is funded by the National Science Foundation, grant #EEC -1404766.”

  2. Unit Overview Topic: Exponential Functions Common Core • Make sense of problems and persevere in solving them • Model with mathematics • Attend to precision Standards Next Generation Science Standards • Developing and using models • Systems and system models • Analyzing and interpreting data • Engaging in argument from evidence • Using mathematics and computational thinking

  3. Activity Highlights Title: Exploring exponential functions in cell growth and zombie apocalypse simulations. Guiding Questions: • What characterizes exponential growth and decay graphically? • How can one differentiate an exponential model from a linear model given a real world data set? • What are real world models of exponential growth and decay? Objectives: • Describe Exponential Functions • Describe the difference between exponential and linear functions • Provide examples of exponential growth in real life situations

  4. Activities • Cancer Cell Population • One student is selected as the “cancerous cell” and receives a die • Each time that student rolls, 1 day has passed • If the student rolls a 5, they are able to reproduce and another student becomes a “cancer cell” (receives a die) • Students continue to roll until entire class becomes “cancer cells” • Students graph rolls versus cell population to identify this population as exponentially increasing • Zombie Apocalypse • Groups of 2 (each member assumes role of “CDC Director” or “Mayor” of a major US City) • Provide initial zombie population & rate • Create exponential model of variables • New drug is available- hypothesize if it will be effective • Graph and tabulate population • Compare results with another team who received a different novel drug- Which was more effective? Why?

  5. ACS (Application, Career, Societal Impact) • Application • Combined math and science to medical concepts and population studies • Career • Discussed careers in disease control, oncology, and engineering • How do these simulations relate to specific career paths? • Societal Impact • Considered how we could positively influence the quality of life for others in these career roles • Analyzed how these data would impact a real world situation (disease outbreak)

  6. Evidence of Student Learning • 81% improvement • 6% no change • 13% decrease • Clear understanding of conceptual knowledge and mathematical concepts

  7. Reflections Post-Summative Assessment • Scores related directly to students’ willingness to participate in activities • Ability to apply word problems to appropriate mathematical equations increased Future Improvements • Expand lesson to three days • Greater focus on real world applications; students are more motivated by these relationships • Discuss limiting factors for scenarios that do not model exponential growth • Apply equations to exponential decay

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