Introduction to ChemistryOpen Learning Initiative
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Reactions Involving Mixtures
The learning experience in the Stoichiometry course is constructed from the following types of components:
- Videos that introduce the scenarios and chemical concepts, and provide worked examples of stoichiometry computations.
- Scaffolded homework activities provide learners with hints and feedback on an as-needed basis, and fade this help appropriately such that learners remain challenged but not floundering.
- Virtual laboratory activities that couple the mathematics of the course with authentic chemistry experiments, helping learners see how their calculations relate to chemistry practice. The Virtual Laboratory is a simulation-based learning environment for aqueous chemistry. It allows learners to select from hundreds of standard reagents and manipulate them in a manner that resembles that of a real lab.
- End-of-module quizzes that help learners assess their knowledge.
The Open & Free Chemistry course does not include access to the end-of-module graded exams or to the course instructor. No credit is awarded for completing the Open & Free Chemistry course.
The course also uses a scenario, arsenic contamination of the Bangladesh’s water supply, to motivate and organize the content. Traditional courses tend to follow a bottom-up approach to learning chemistry. This traditional approach teaches abstract concepts and tools before discussing their practical application, which results in students learning bits of unconnected knowledge that are rarely usable let alone memorable. In this stoichiometry course, scenarios are used both to motivate the material and to provide a framework in which students can organize their knowledge.