ASE 2027 Annual Conference

This session explores how a mechanistic approach can improve the teaching of organic chemistry at post-16, helping students move beyond surface memorisation to genuine understanding. Drawing on evidence from examiners’ reports and common errors seen in student work, we will examine why students often struggle with mechanisms and how a more structured, language-rich approach can overcome these barriers.

Delegates will consider how to build student fluency in recognising key features of reactions before tackling mechanisms themselves. This includes confidently identifying homolytic versus heterolytic fission, and distinguishing between addition, substitution, and elimination through analysis of overall equations.
Participants will engage with a range of carefully designed, classroom-tested strategies to scaffold learning across the two years of the course. These include:

•Dual coding approaches to represent mechanisms visually and verbally
•Activities matching mechanistic steps to their chemical meaning
•Diagnostic tasks that require students to select or justify the next step in a mechanism
•Completion and sequencing exercises to reveal and address misconceptions

All resources are grounded in research-informed practice and refined through extensive classroom experience.
The session concludes with dedicated time for reflection and collaboration. Delegates will work in groups to adapt and design resources for their own teaching contexts, ensuring that ideas can be implemented immediately and effectively in the classroom.