Growth in Teachers' Mathematics Content Knowledge for Teaching
Authors: Dave Weaver, Thomas Dick

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4. Results
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There were statistically significant positive increases in the mathematical content knowledge of our participants over the three summers of institute work.

Pre-Post Differences (scaled content knowledge scores before first summer institute and after third summer institute) by content strand and overall

Secondary Teachers (6-12)
Arithmetic and Algebra M Diff=.397 SE=.085 P<.001
Geometry M Diff=.192 SE=.063 P=.003
Overall M Diff=.055 SE=.01 P<.001
Elementary Teachers (K-5)
Number Concepts and Operations M Diff=.343 SE=.085 P<.001
Geometry M Diff=.479 SE=.068 P<.001
Pattern, Functions, and Algebra M Diff=.372 SE=.083 P<.001
Overall M Diff=.077 SE=.01 P<.001