Diagnostic questioning for teachers in Port Lavaca

Diagnosis is the scarce resource

You can already explain. Whatever help you need, a fresh explanation of place value is not it. The scarce resource in a classroom is not explanation, it is diagnosis: knowing which of twenty-six children has a misconception, and which misconception, before the unit ends and the evidence goes stale. Marked work is a poor diagnostic instrument for this, and everyone who has marked a set knows why. A correct answer can be produced by sound reasoning, by a memorised procedure applied luckily, by a neighbour, or by a guess, and the page does not distinguish between them. A wrong answer is more informative but still silent about cause — you can see the digit in the wrong column and not know whether the child misunderstands exchange or simply lost track. Reasoning has to be spoken to be inspected. That is the whole argument for questioning as a diagnostic tool rather than a pedagogical style, and it is the only claim on this page that matters.

Three questions, planned in advance

Three questions planned in advance, pitched at increasing depth, will tell you more about a class than a marked exercise will. Write them into the plan next to the worked example, not in the moment. The first is procedural: what is the first step, and what does that step do? The second is justificatory: why that step rather than the alternative a sensible child might reach for? The third breaks the surface: what would change if this number were a fraction, if the shape were irregular, if the sentence had two clauses instead of one? The sequence matters because each level has a different failure mode. Children fail the first when they were absent or inattentive, the second when they learned a procedure without a reason, and the third when they have generalised from a single case. Those three need different responses from you, and the only way to tell them apart is to ask in that order and listen to which one collapses.

What to teach about using these tools

Your students are using these tools already, and the honest position is not prohibition or enthusiasm but a usable distinction they can apply themselves. Teach it as a question about who did the thinking. Asking a system to define a word, to ask you questions about a passage, or to check whether your reasoning holds is study. Asking it to produce the paragraph you hand in is submitting someone else’s work. Children as young as eight can hold that line if you name it plainly and keep naming it. Two further things are worth teaching outright: these systems produce confident wrong answers, so a claim from one is a hypothesis rather than a fact, and anything that hands over a finished answer on request is not helping even when it is permitted. The most useful assignment we have seen for this is asking a student to catch a tool being wrong and explain how they knew.

Workload, honestly

This will not save you time, and any claim that it does deserves suspicion. Planning three good questions takes longer than photocopying an exercise. Listening to a child explain their reasoning takes ninety seconds you did not have, multiplied by however many children you reach. The honest case is about where the time goes rather than how much of it there is. Time spent asking is diagnostic; time spent marking a set of thirty is largely archaeological, since the lesson has already happened and the reteaching has to be scheduled against a curriculum with no slack in it. Practically, the trade that works is narrow: pick two children per lesson, not the whole class, and rotate. Six lessons covers a group. That is achievable inside a normal week, unlike the version where you interrogate everybody, which is the version that gets abandoned by Thursday.

Supporting a teacher rather than replacing one

Nothing here replaces you, and the substitution framing gets the value backwards. You hold the things no system has: the knowledge that this child was quiet all week, the professional judgement that a class is not ready to move on, the relationship that makes a nine-year-old willing to say "I do not know" out loud. What software can do is unglamorous by comparison — sit with one child through the twentieth repetition of the same question type without impatience, and keep asking rather than telling while a parent cooks dinner. Misa is printable worksheets across ten subjects for Kindergarten to Grade 5, plus a guided questioning service that asks, checks and adjusts. It is used by families at home. Where it helps a classroom is by making the home half of a child’s practice look more like the questioning you would do, and less like an answer being copied off a screen.