Start with the mistake a learner needs to understand. Choose explanations, diagrams and practice that address it, then test whether the lesson makes the next step clear.
Start with a specific misunderstanding
Choose one topic and write the error you expect to see. For example, a learner may remember a formula but substitute incompatible units. Build the explanation and practice around that problem rather than adding media for its own sake.
Make the reasoning inspectable
Use a worked example with enough intermediate steps to reveal the method. Keep a diagram’s labels readable and place necessary definitions near the example. A short text or static image can be the right format; interactive content is not automatically better.
Then ask the learner to solve a related but not identical problem. Explain why plausible wrong answers fail, not only which option is correct.
Review the complete question
Have a subject reviewer check the prompt, options, answer key, units and explanation together. Include assumptions explicitly. If several answers are defensible, revise the question before drawing conclusions from its scores.
Use the question-bank preparation guide when moving existing material.
Test attention and understanding separately
Ask a test learner to complete the lesson on a phone. Note unreadable labels, unclear controls and places they lose the thread. Use their response to the practice task to investigate understanding; clicks and time on page measure something else.
Avoid promising adaptive testing or personalised instruction unless the exact workflow is implemented and evaluated. The content editor provides formats to consider, while your curriculum and review process determine how they are used.
