id: 05760258
dt: j
an: 2010e.00425
au: Herron-Thorpe, Farren L.; Olson, Jo Clay; Davis, Denny
ti: Shrinking your class.
so: Math. Teach. Middle Sch. 15, No. 7, 386-391 (2010).
py: 2010
pu: National Council of Teachers of Mathematics (NCTM), Reston, VA
la: EN
cc: F73
ut: mathematics activities; college school cooperation; lower secondary;
computation; manipulative materials; measurement; scaling; ratio
ci:
li: http://www.nctm.org/eresources/article_summary.asp?URI=MTMS2010-03-386a&from=B
ab: Summary: Toys in the classroom was the result of a National Science
Foundation grant that brought two engineering graduate students to a
middle school math class. The graduate students and teachers
collaborated in an effort to enhance studentsâ€™ mathematical learning.
An engineering context was theorized as a way to further develop
studentsâ€™ understanding of mathematical ideas. This article describes
the Scale Model Project where students explored the concept of
calculating scale factors commonly used for toys. While developing
their understanding of ratios and scale factors, this project helped
middle school students recognize the importance of accurate measurement
and correct arithmetic. The project gave students an opportunity to
explore scale factors and how scale is used to shrink or stretch
objects. Reflections from teachers and their students revealed
meaningful information about the project. Having students create a
scale model self was a great way to engage them in envisioning a scene.
They were excited to start measuring and "shrinking" so that the scale
model scenes could be created. The project intertwined studentsâ€™
understanding of scaling, benchmarking fractions and measuring, which
increased the retention of their learning. It helped students
understand how to use scale factors and showed them that engineering
can be used creatively. (Contains 1 figure.) (ERIC)
rv: