
06530839
j
2016a.00172
Cohen, Jeremy A.
Casa, Tutita M.
Miller, Heather C.
Firmender, Janine M.
Characteristics of second graders' mathematical writing.
Sch. Sci. Math. 115, No. 7, 344355 (2015).
2015
Wiley (WileyBlackwell), Hoboken, NJ; School Science and Mathematics Association (SSMA), Stillwater, OK
EN
C52
E42
G42
G32
communication
learning processes
geometry
measurement
classroom discourse
teachers and teaching
doi:10.1111/ssm.12138
Summary: This study compared the characteristics of second graders' mathematical writing between an intervention and comparison group. Two sixweek Project M2 units were implemented with students in the intervention group. The units position students to communicate in ways similar to mathematicians, including engaging in verbal discourse where they themselves make sense of the mathematics through discussion and debate, writing about their reasoning on an ongoing basis, and utilizing mathematical vocabulary while communicating in any medium. Students in the comparison group learned from the regular school curriculum. Students in both the intervention and comparison groups conveyed high and low levels of content knowledge as indicated in archived data from an openresponse endoftheyear assessment. A multivariate analysis of variance indicated several differences favoring the intervention group. Both the high and lowlevel intervention subgroups outperformed the comparison group in their ability to (a) provide reasoning, (b) attempt to use formal mathematical vocabulary, and (c) correctly use formal mathematical vocabulary in their writing. The lowlevel intervention subgroup also outperformed the respective comparison subgroup in their use of (a) complete sentences and (b) linking words. There were no differences between groups in their attempt at writing and attempts at and usage of informal mathematical vocabulary.