The purpose of this study was to analyze the K-12 science standards of seven countries that have improved their engineering practices noticeably by integrating engineering and its elements into their science documents, namely, Australia, England, Estonia, Hong Kong, South Africa, Turkey, and the United States. For this purpose, K-12 science standard documents were examined vis-a-vis their inclusion and distribution of engineering and its elements across grade bands. Standards were analyzed through content analysis by employing the Framework for Quality K-12 Engineering Education. The results showed that the United States and to some extent Turkish standard documents had placed a particular emphasis on engineering. The number of standards relating to engineering is the highest in the United States and the lowest in Estonia. These standards across grade bands were distributed evenly in the documents of England and the United States. Science standard documents in early grades included few such standards. In light of the results, we discussed the extent and comprehensiveness of engineering integrated into the K-12 science standard documents and provided implications for integrating engineering elements into science standard documents. Copyright ©2021 Springer.

Undergraduate courses on the nature of science (NOS) often involve teaching a set of core elements. Without extensive unpacking and reflection, the complexity of those NOS elements could be easily misinterpreted and oversimplified by the students. Our paper will explain how we teach our Hong Kong university students the NOS by introducing traditional Chinese science in a general education common core course. This course adopted a seminar method of teaching by introducing and discussing the cultural–historical context in its pedagogical design. There are indicators that this approach is effective as the conflict between students' own culture and what they are learning generated a deeper reflection and integration of the newly learned with their prior knowledge and personal beliefs. We believe our pilot study would be an invaluable case study for exploring ways to improve NOS teaching for other educators. Copyright © 2021 Springer.

Nature of science (NOS) has become one of the major emphases in curriculum and assessment. This study explores what NOS is included and how this is achieved in the Hong Kong biology curriculum and 7-year high-stakes assessments. While conceptualizations of the official definition of NOS differ, this study employs the family resemblance approach (FRA) to analyze the inclusion of NOS in the curriculum and the high-stakes assessments. In one characterisation of FRA (i.e. Erduran and Dagher 2014), NOS comprises a cognitive-epistemic system and a social-institutional system. There is a total of 11 categories in these two systems and these categories are interconnected with one another. By adopting the epistemic network analysis (ENA), the frequency of connections among these NOS categories in the curriculum and the high-stakes assessments can be visualized and compared. Two main similarities are observed when comparing the epistemic networks of the curriculum and the high-stakes assessments: (1) a greater emphasis on the cognitive-epistemic rather than the social-institutional system and (2) the rarity of connections between categories in the social-institutional system. However, the high-stakes assessments differ from the curriculum in that they have more connections between the cognitive-epistemic system and the social-institutional system. Moreover, assessment items in the Hong Kong biology examinations involve a limited range of contexts and skills. Implications for the design of curricula and high-stakes assessments will be discussed. Copyright ©Springer Netherlands.