Abstract: This paper aims to investigate the effectiveness of morphological analysis instruction on grade ten biology-majored students in a high school in Vietnam, and to find out whether they can catch up with the level of university students majoring in natural science, in terms of science vocabulary performance. The research was conducted at a university and a high school in the Mekong Delta, Vietnam. The instruction selectively targeted technical multisyllabic words that occur frequently in the participants' corpus. Thirty-one students including eighteen Grade 10 biology students as the experimental group and thirteen university students as the control group participating in the study. For data collection, the pre-posttests were designed, validated and applied for the experimental and control......
Keywords: technical vocabulary, biology, multisyllabic, acquisition, performance, morphological analysis
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