Students' understanding of nature of science (NOS) has been largely examined primarily in written or verbal modes. The visual, verbal, and written modes are essential for students' meaning-making of NOS. However, research has sidelined the interaction among these three modes in understanding students' collaborative discourse of NOS. Informed by…

The use of group drawing to promote student-generated representation is a common instructional strategy as it combines the benefits of using visual representation and collaborative talk. Although the affordances of group drawing have increasingly been emphasized in science education, few studies have investigated how drawing as a visual mode…

The paper compares the nature of the textual construction of the Programme for International Student Assessment (PISA) science test items and the Greek school science textbooks. This nature is determined by the interplay of the notions of classification (content specialization) and formality (code specialization) modulated by both the linguistic…