As part of an outreach initiative by the Natural History Museum in Vienna, Austria, an interdisciplinary educational module was developed to teach students about sustainability through the lens of mineral resources used to produce mobile phones. The overall goal of the module is to provide teachers of different subjects with a multifaceted tool to…

This article provides an example of a social studies lesson from Turkish educational context in order to facilitate comparison with examples of social studies lessons from other parts of the world. This lesson was recorded in a 7th grade class at a middle school in one of the metropolitan neighborhoods in Istanbul. According to the current…

The purposes of this study were to (1) investigate non-accelerated middle schools students' understanding of pre-algebraic concepts, in particular, addition and subtraction of integers and the notion of equality; (2) describe and analyze how non-accelerated middle school students interact with The Geometer's Sketchpad (GSP) applets depicting…