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Lay, Yoon Fah; Ng, Khar Thoe – Problems of Education in the 21st Century, 2021
Trends in International Mathematics and Science Study (TIMSS) is an international comparative study that has been implemented by the International Association for the Evaluation of Educational Achievement (IEA) since 1995. This proposed study is aimed to identify the correlations of science classroom teachings with eighth graders' science…
Descriptors: Correlation, Science Instruction, Science Achievement, High Achievement
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Ainsworth, Hannah; Hewitt, Catherine E.; Higgins, Steve; Wiggins, Andy; Torgerson, David J.; Torgerson, Carole J. – Educational Research and Evaluation, 2015
Randomised controlled trials (RCTs) can be at risk of bias. Using data from a RCT, we considered the impact of post-randomisation bias. We compared the trial primary outcome, which was administered blindly, with the secondary outcome, which was not administered blindly. From 44 schools, 522 children were randomised to receive a one-to-one maths…
Descriptors: Statistical Bias, Research Methodology, Science Experiments, Research Design