This mixed methods study examined an association between cognitive types of teachers' mathematical content knowledge and students' performance in lower secondary schools (grades 5 through 9). Teachers (N = 90) completed the Teacher Content Knowledge Survey (TCKS), which consisted of items measuring different cognitive types of teacher knowledge.…

Advances in learning approaches can enhance deeper levels of mathematical thinking and engagement through the use of new digital environments and technologies. The growing utilisation of portable digital devices in schools has meant there are enhanced tools to support mathematical learning and understandings. This article focused on those who work…

Today's children are growing up in an environmentally damaged and technology orientated world. The advent and advances of technology, has resulted in the production of millions of electronic devices, which eventually become waste when they reach their end-of-life. These devices contain toxic components that are not only polluting the environment…

In this discussion, I explore the unfolding effects of Arizona's anti-bilingual education law (Proposition 203) on schools with predominant language-minority student populations. Instead of facilitating academic progress, policies like Proposition 203 impede teachers from "scaffolding" (Long & Adamson, 2012, p. 39) their students'…

This dissertation reports the results of a qualitative research project on area measurement. The study utilized structured, task-based interviews with students to (a) investigate the ways students enumerate and structure two-dimensional space with a variety of area units; (b) identify conceptual, procedural, and intuitive aspects of area…

Due to the central role of textbooks in the teaching and learning of science, it is imperative that textbooks provide correct content and instructional support. We investigated how 16 South African Grade 7 natural science educators selected their textbooks and how they evaluated these textbooks. The results were analysed according to the…