My Car Is Worth What? Statistical Modeling for Predicting Value
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During Algebra 2, students typically study statistical modeling involving linear, exponential, and quadratic functions. Students explore each type of function separately using verbal descriptions, ordered pairs, graphing, and equations. Calculator technology supports and extends student learning as teachers encourage both conceptual understanding of each model (constant increase or decrease, percentage increase or decrease, parabolic increase or decrease) and procedural competence (identifying, calculating, explaining, and using models). After some practice with data sets that are not already labeled as linear, exponential, or quadratic, students move to raw data sets, develop their own models, and justify their choices.
Supplementary Materials
- Supplemental Materials (DOC 45 KB)
Footnotes
Edited by Patrick Harless Activities for Students appears six times each year in Mathematics Teacher, often providing in reproducible formats activity sheets that teachers can adapt for use in their own classroom. Manuscripts for the department should be submitted via http://mt.msubmit.net. For more information, visit http://www.nctm.org/mtcalls.
Department editors Brad Burkman, bburkman@lsmsa.edu, Louisiana School for Math, Science, and the Arts, Natchitoches, LA; and Sam Shah, samjshah@gmail.com, Packer Collegiate Institute, Brooklyn, NY
Contributor Notes
CATHY G. SCHLOEMER, cschloemer@verizon.net, recently retired from teaching mathematics at Indiana Area High School in Indiana, Pennsylvania. Her interests include creating and sharing ways to more effectively engage students in learning mathematics.
