The POE (Predict-Observe-Explain) is a technique for identifying students' knowledge and understanding of science concepts. It has mainly been used for physical science topics at secondary and tertiary levels. In the present study, 60 preservice teachers each implemented and evaluated POEs with groups of primary children. The children were studying a range of topics from the NSW Science and Technology K-6 Syllabus and represented a range of year levels. The evaluations were generally positive. The children responded to the technique enthusiastically and the teachers were able to identify both their understandings and their process skills development. The main problems were the difficulty of inventing suitable POEs in some topics, especially topics on communication, and problems caused by the use of oral rather than written responses. The study concluded that it is a suitable technique for primary science.
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