Guided by the 5E framework (Engage, Explore, Explain,
Elaborate,
Evaluate), a buffer solution courseware was designed using Articulate Rise, a content authoring tool. It was deployed
in a freshman general chemistry course in the April semesters of
2022 and 2023. The courseware was a supplementary resource to support
instructor-created lecture videos, along with other learning activities
integrated under one roof. An opening YouTube video was used as a
hook to interest learners by highlighting the application of buffer
solutions in the COVID test kit. A ChemCollective virtual laboratory activity on buffer preparation was weaved into
the package for learner exploration work, guided by a worksheet. The
traditional lecture videos were also integrated into the Explain stage.
Additional examples of industry uses of buffer solutions and the application
of dilution factor in industry buffer formulations were designed into
the Elaboration stage. Formative self-checks were included for evaluation
of learning. Data collected from the self-check completion rate and
a user experience survey showed favorable outcomes. About 43% of the
cohort studied at least one part of the courseware. Of those who attempted
the courseware, 80% attained full completion. Learners enjoyed the
highly interactive content, particularly the virtual laboratory. Improvements
to future course implementation were discussed.