Classroom planning · Practical guide
Check prior knowledge before a new lesson
A prior-knowledge check is a short task that reveals the ideas learners bring to a new topic. Use the responses to decide where to begin, rather than to award a grade.
Source and editorial audit: 18 October 2026 · AI-assisted
Choose one prerequisite
List what learners need for the next task, then select the prerequisite most likely to affect their participation. Before comparing fractions, you might check equal parts and the meaning of a whole. A long revision test can consume the time intended for the new learning.
A question such as “Do you remember fractions?” tells you little. Give a small representation to interpret, an example to sort or a prediction to explain. Ask for reasoning so you can distinguish recall from an underlying idea.
Invite every learner to respond
If only volunteers answer, you may hear from a small confident group. Try individual drawings, response cards, a brief written note or a quiet explanation to a partner before a whole-class discussion. Select a response mode that does not introduce an unnecessary language or motor barrier.
For example, show a rectangle split into unequal pieces and ask whether one piece must be one half. Give thinking time, then collect a response from everyone. Do not present the task as a trap; the purpose is to reveal an idea that can be discussed safely.
Interpret patterns before planning groups
Separate responses into useful temporary patterns: understands the prerequisite, needs a concrete example, or needs further clarification because the response is incomplete. Do not convert these patterns into permanent ability groups.
A blank response does not prove lack of knowledge. Check whether the learner understood the instruction, could see the representation and had a way to communicate. A short conversation may reveal that the barrier was the task rather than the concept.
Change something because of the evidence
If most learners are ready, begin the planned task. If many share a misconception, use a contrasting example first. If a few need support, offer a representation or a brief teacher-led check while others work on a connected task.
Close the loop by revisiting the same prerequisite in a different example. A prior-knowledge check becomes useful when it changes a teaching decision, not simply because it appears at the top of a lesson plan.
Make it your own
Your planning task
Choose tomorrow’s topic. Identify one prerequisite, write a single diagnostic prompt and describe what you will do for two different response patterns.
Check your plan
- The prompt checks a genuine prerequisite.
- Every learner can respond.
- An incorrect answer can be discussed without embarrassment.
- The responses lead to a specific teaching adjustment.
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Further reading and scope
- NCERT: Source Book on Assessment, Mathematics
PDF pages 1–4: conceptual reasoning, prerequisites, varied evidence and interpreting errors. Historical assessment guidance, not an examination notification. The activities here are original suggestions.
- EEF: Teacher Feedback to Improve Pupil Learning
Recommendations 1–3: learning intentions, identifying gaps and allowing learners to use feedback. UK guidance; the examples here are original and do not claim Indian syllabus alignment.
Original examples and checklists, checked against the cited sources through an AI-assisted editorial audit. No independent academic reviewer or official board endorsement is claimed. Read our editorial and sources policy.