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Thinwiangthong, Sampan; Eddy, Colleen M.; Inprasitha, Maitree – Malaysian Journal of Learning and Instruction, 2020
Purpose: The main purpose of this study was to examine mathematics teachers' abilities in developing formative assessments when teaching algebraic reasoning after utilizing two innovations: lesson study and open approach. Methodology: A single group quasi-experimental research design was employed in two mathematics classes in a school in…
Descriptors: Mathematics Teachers, Formative Evaluation, Foreign Countries, Secondary School Teachers