Those tricky topics like simultaneous equations often feel overwhelming for many students. Spending lesson after lesson on these topics often has little impact on students’ ability to answer exam questions confidently.
Instead, I prefer to teach the topic thoroughly in one lesson, ensuring students understand the process through clear modelling and guided practice. After that, the topic becomes a regular feature of our lesson starters. Every starter task includes a simultaneous equations question and, over time, the frequency is gradually reduced as students become more secure. This approach reflects evidence from the EEF’s cognitive science review, which highlights the value of retrieval practice and spaced practice in strengthening long-term memory. Rather than revisiting a topic intensively and then moving on, students repeatedly retrieve and apply the knowledge over time until it becomes increasingly automatic.
The same principle applies to other topics that students often find difficult because of the context rather than the mathematics itself.
Take speed, distance and time as an example. There is a temptation to introduce the formula triangle straight away. Whilst this can help some students remember a calculation, it can also encourage them to follow a procedure without understanding what the mathematics represents. Instead, I begin by exploring the concept itself. What does ‘speed’ actually mean? How do we experience speed in everyday life? Once students understand the relationship between speed, distance and time, the calculations begin to make much more sense. The formula then becomes something that supports understanding, rather than replacing it.
By combining explicit teaching with regular retrieval and a focus on conceptual understanding, students are more likely to retain what they have learned and apply it successfully when they encounter these topics again in the exam.