In most primary science classes, students are taught science skills by way of learning by doing. Research shows that explicit instruction may be more effective. The aim of this study is to investigate the effects of explicit instruction in an inquiry-based learning setting on the acquisition of science skills for students in primary education. Participants included 705 Dutch 5th and 6th graders. Students were randomly assigned to either an explicit instruction condition including an 8-week intervention of explicit instruction on inquiry skills; an implicit condition in which students were taught by learning by doing; or a baseline condition in which students followed their regular science curriculum. To assess the effects, measurement instruments for evaluating the acquisition of science skills were developed. Results of a multi-level analysis indicated that explicit instruction facilitates development of science skills. Therefore, this study provides a strong argument for including an explicit teaching method for developing science skills in primary science education.
Thinking back and forth between observing physical phenomena and developing scientific ideas, also known as hands-on and minds-on learning, is essential for the development of scientific reasoning in primary science education. In the Netherlands, inquiry-based learning is advocated as the preferred teaching method. However, most teachers lack time and sufficient pedagogical content knowledge to adequately provide the teaching required for this. To address this problem, we designed and evaluated science and technology lessons, consisting of hands-on experiments combined with interactive diagrams, aimed at scaffolding primary school students (9–12 years) in the development of their scientific reasoning. Our proof-of-concept uses an online application, that lets students work through the lessons while alternating hands-on and minds-on activities. A study was carried out (n = 490) showing that most students successfully complete the lessons within a standard lesson timeframe. The approach enables students to effectively apply several types of scientific reasoning and to do so more autonomously than in traditional science classes.
Integrated curricula seem promising for the increase of attention on science and technology in primary education. A clear picture of the advantages and disadvantages of integration efforts could help curriculum innovation. This review has focussed on integrated curricula in primary education from 1994 to 2011. The integrated curricula were categorized according to a taxonomy of integration types synthesized from the literature. The characteristics that we deemed important were related to learning outcomes and success/fail factors. A focus group was formed to facilitate the process of analysis and to test tentative conclusions. We concluded that the levels in our taxonomy were linked to (a) student knowledge and skills, the enthusiasm generated among students and teachers, and the teacher commitment that was generated; and (b) the teacher commitment needed, the duration of the innovation effort, the volume and comprehensiveness of required teacher professional development, the necessary teacher support, and the effort needed to overcome tensions with standard curricula. Almost all projects were effective in increasing the time spent on science at school. Our model resolves Czerniac’s definition problem of integrating curricula in a productive manner, and it forms a practical basis for decision-making by making clear what is needed and what output can be expected when plans are being formulated to implement integrated education.
