In this laboratory activity, students were tasked with determining the heat of combustion for each of three common sugar substitutes: saccharin, aspartame, and sucralose. The heats of combustion were determined via three different methods: bomb calorimetry, heats of formation derived from semiempirical calculations, and tabulated average bond…

Environmental content is becoming increasingly important in schools, but teachers may have difficulty grasping accurate knowledge. This study investigated how student teachers construct a conceptual understanding of biodiversity loss in an online environment. Sixty-five first-semester primary student teachers at a Finnish university were given the…