Why Responsive Teaching Is Not Enough

Michael Prince

The lesson feels secure, students seem confident, and you have evidence that learning has taken place. The students completed mini whiteboard activities and got the majority of the answers correct. Then assessment happens and they underachieve. They are able to recall the definitions but are unable to explain them. They describe accurately but give inaccurate predictions.

Responsive teaching has transformed classrooms by making it clear to teachers what pupils are thinking. There are more frequent checks for understanding rather than long exposition with no idea of whether students are following. Errors surface earlier and misconceptions are revealed. Detecting that a mistake has occurred is, however, not the same as identifying the underlying cause of the mistake.

Different mistakes can have distinct origins requiring a specific repair, yet a common response is simply to re-explain the material.
If a student already has a strong understanding of the concept and has merely forgotten to include a key word, re-explaining the whole process may not be the best fix. Alternatively, a student who has written a near-perfect definition may appear to just need a minor correction, but further probing would have revealed that they were unable to apply this definition or make predictions using it.

The key question is: why did the mistake occur? A useful way of thinking about this is medicine. If someone comes to the doctor complaining they are in pain, the doctor does not immediately decide that the patient needs surgery. The pain gives useful data that something is not right, but it does not give you the complete picture of what the actual problem is. Diagnosis is needed, giving the most likely causes and informing an appropriate remedy.

Classrooms are similar in that the wrong answer is like a pain signal. It shows that something is not secure, but it may not tell us whether the cause is that the student forgot a key word, misunderstood the relationship, or never had a functioning model in the first place. In the opening scenario, students may have produced similar answers on mini whiteboards yet had different problems. Some may have a functioning model which needs variation to tighten whilst others may have been relying on recognition and memorisation. Without diagnosis, both look similar, but assessment uncovers the difference.

So how exactly do we diagnose? A useful first step is to determine whether or not a causal mental model is present. By “mental model” I mean a representation which allows students to explain why something happens and predict what would happen if something changed. When students have been taught about concentration, can they picture concentration in terms of particles and volume? Can they use the model to make accurate predictions? Concept Repair is an approach which focuses on diagnosing errors before selecting the appropriate repair. One tool it uses is the Fast Gate. A Fast Gate is a short diagnostic probe (usually one or two questions) designed to provide stronger evidence about whether a student has a functioning mental model.

A standard hinge question might be: what is diffusion? A student can parrot the definition of diffusion yet still believe that this process needs energy.

Which statement describes diffusion?
A. Movement of particles from high to low concentration
B. Movement of water through a membrane
C. Movement of particles using energy

A student could answer this question, through recognition, memorisation or good test technique with little understanding of the underlying concept. Before deciding whether a repair is needed, a Fast Gate could ask the following:

Q1: Why does oxygen move from the alveoli into the blood?
(You must use the phrase concentration gradient.)
Q2: If the concentration of oxygen in the blood increased to match the alveoli, what would happen to diffusion? Why?

Q1 forces the causal relationship; students must have a working model to be able to answer this.
Q2 forces prediction under variation. Together, they make it far less likely that a pupil can succeed through recognition alone.

What is the formula for density?
A. m × v
B. m ÷ v
C. v ÷ m
D. m − v

A student can chant the formula, but it does not test what mass or volume represent or why division is used.

Fast Gate

Q1: Why do we divide mass by volume to calculate density?
Q2: If two objects have the same mass but one has double the volume, which has the greater density? Explain.

Q1 looks to uncover whether pupils have an understanding of density as a ratio between two quantities.
Q2 checks whether the relationship is internalised.

This is not a criticism of hinge questions. Hinge questions are powerful for detecting whether learning is secure in the moment. They tell us whether to intervene. What they do not systematically tell us is what kind of intervention is required. Fast Gates are not improved hinge questions. They sit at a different decision point. Once a problem has been detected, Fast Gates helps diagnose the cause before deciding how to repair it. The nature of the repair should then be informed by what diagnosis reveals.

If the mental model is present, a fundamentally different repair must be used compared with when the mental model is absent.
If evidence suggests that the mental model is largely intact, the repair would likely focus on strengthening and stabilising it. For example use of model answers with errors included or deliberate misconceptions added for students to improve upon. If the model appears incomplete or distorted, repair may require rebuilding the core structure, perhaps using carefully constructed analogies or worked examples to reconstruct the underlying representation. These two routes require different instructional moves and confusing them can lead to repeated failure.

Responsive teaching answers an essential question: are students secure enough to proceed? Concept Repair addresses the next question: why are they not secure? Responsive teaching ensures that misunderstanding is visible. Concept Repair ensures that it is repaired effectively.

Reliable learning depends on both. The quality of repair depends on the quality of diagnosis.