Children's misconceptions in science, and remedial teaching

What this heading covers

Why children get science wrong in specific, repeatable ways, and what a teacher does about it. The syllabus treats this as the central problem of science teaching rather than one problem among several, and the paper sets more questions from it than from any other science pedagogy heading.

The position everything rests on: a child arriving in a science lesson is not empty. They have explanations already, built from years of watching the world, and those explanations are often reasonable, useful in daily life, and wrong. Science teaching is not filling a gap; it is competing with an existing theory that has served the child well.

That is why a misconception survives being told it is wrong. The child's idea explains their experience; the teacher's idea explains a demonstration. Unless the child's own experience is shown to be inadequate, the new idea is stored for examinations and the old one is kept for life.

What children actually believe

These are the ones that recur. The middle column is the point — each is a reasonable generalisation from ordinary experience.

Physics

The child believes	Because
Heavier things fall faster	In air they often do; a stone beats a sheet of paper
A moving object has a force in it that runs out	Things do stop; the push is remembered as being inside
A coat makes you warm	You feel warmer in one
We see because something comes out of the eye	Seeing feels active, like reaching
Shadows are made of something, or are a reflection	A shadow follows and has a shape
A heavy object sinks and a light one floats	Usually true of the objects a child handles
Electricity is used up in a bulb	The battery runs down

Chemistry and matter

The child believes	Because
Dissolved sugar no longer exists	It cannot be seen
A dissolved substance makes the water lighter, or weight is lost	Nothing is visible to weigh
Gases have no weight	You cannot feel air in your hand
Rusting adds nothing — the iron is just spoiled	Rust looks like decay, not addition
Melting and dissolving are the same	Both make a solid disappear into a liquid

Biology

The child believes	Because
Plants take their food from the soil through roots	We feed plants with manure, and roots are in soil
Plants do not respire, or respire only at night	Photosynthesis is taught first and loudly
Only animals that move are alive; a plant or a seed is not	Movement is the everyday test for life
Seeds need light to germinate	Plants need light, so seeds must
A whale or dolphin is a fish	It lives in the sea and is shaped like one
An insect is any small crawling creature	Spiders and millipedes look like insects

Earth and space

The child believes	Because
Seasons are caused by the earth being nearer the sun in summer	Nearer a fire is hotter — a good analogy misapplied
The sun goes round the earth	That is what it visibly does
The moon is only out at night	That is when it is noticed

The common thread, and a question asks for it: each is a generalisation that worked within the child's experience and fails outside it. That is the same structure as a mathematical error rule, and the syllabus's name for them — alternative conceptions rather than mistakes — records it.

Why telling does not work

Three reasons the paper expects:

1. The child's idea explains their evidence. Heavy things do usually fall faster in a classroom.
2. The new idea is harder. "Air resistance acts on a larger surface" is more work than "heavier is faster."
3. The two can coexist. Children routinely hold the school answer for tests and the real answer for life, which is why a correct examination answer is poor evidence that a misconception has gone.

Conceptual change: the sequence that works

The condition for a child to give up an idea is dissatisfaction with it — produced by their own observation, not by the teacher's authority.

1. Elicit the idea. Ask what they think will happen and why, before any demonstration. In writing or by a show of hands, so the prediction is committed.
2. Create the conflict. Show the case their idea cannot explain.
3. Let them see it. Not described — performed, with the result visible and the prediction still on the board.
4. Supply the better idea, now that there is a gap for it.
5. Apply it elsewhere, so it is not tied to the one demonstration.
6. Return later. Misconceptions recover. The same question three weeks on is part of the method, not a sign of failure.

The demonstration against each

This is the part that makes the heading answerable, and the part most answers omit.

Misconception	What unsettles it
Heavier falls faster	Drop a sheet of paper and a book — then crumple the paper and drop them again. Same weights, different result; the variable is shape, not weight
Plants eat from the soil	Sprout a seed in wet cotton wool with no soil at all, and watch it grow
Dissolved sugar is gone	Weigh the glass of water, add and dissolve the sugar, weigh again. Taste confirms it too
Gases are weightless	Weigh a deflated balloon and the same balloon inflated, on a sensitive balance
Only moving things are alive	Germinate seeds; time-lapse or day-by-day marks on a stick show a plant moving
Seeds need light	Germinate identical seeds in a dark cupboard and on the sill, both watered
A coat warms you	Wrap a thermometer in a coat and leave it. It does not rise. Wrap an ice cube; it lasts longer
Seasons are distance from the sun	A globe and a torch, tilted — and the fact that it is summer in Australia when it is winter here
We see by something leaving the eye	A completely dark room: nothing is seen however hard one looks
Melting is dissolving	Melt ice in an empty bowl; dissolve salt in water. Two different events, named

The pattern: a case the child's rule cannot survive, performed rather than asserted, with the prediction recorded first. The prediction matters — a child who has not committed can absorb a surprise without noticing their idea was wrong.

The other problems of teaching science

Misconceptions are the first problem. A full answer names these too.

Language. Science has a register, and it collides with everyday use: work, power, energy, force, weight, mass, heat, temperature, animal, insect, pure, theory and organic all mean something narrower or different inside science. Teaching in a second language adds the whole of that burden again.

Apparatus and laboratories. Often absent, and the expected response is improvisation rather than surrender — that is the next lesson's subject.

Safety. Heating, glass, chemicals and electricity in a crowded room. The syllabus expects the teacher to plan for it; it is a reason to demonstrate rather than a reason not to do practical work.

Large classes. Individual investigation is hard with fifty children, and the mitigations are group work, rotating stations and simple apparatus in many copies rather than one good set.

A syllabus that rewards recall. Examinations that ask for definitions make memorising rational, and the teacher who teaches for understanding pays in coverage. The conflict is real and an honest answer says so.

Superstition and claims from outside. Science teaching in India is expected to build scientific temper against unevidenced belief — a constitutional duty under Article 51A(h) — and this must be done by teaching the habit of asking for evidence rather than by mocking what children bring from home.

Teacher confidence. A teacher uncertain of the content avoids practical work and sticks to the textbook, which removes exactly the lessons that would repair misconceptions.

Remedial teaching in science

It is not re-reading the chapter or more questions on it. Re-teaching the same way reaches the same idea.

What it is:

• Diagnose first. A prediction question — "what will happen if…, and why?" — exposes the alternative conception that a recall question hides.
• Target the conception, not the topic. The remedy for "plants eat soil" is cotton-wool germination, not re-reading photosynthesis.
• Use the concrete, because the child's idea came from the concrete and will not be dislodged by words.
• Work individually or in small groups. Two children with the same wrong answer may hold different ideas behind it.
• Revisit. Check again weeks later; recovery is normal.

A question of the kind the paper sets

Most children in a class say that a plant takes its food from the soil. The teacher should: (a) explain photosynthesis again, more slowly (b) tell the children the correct answer and have them write it down (c) ask the children to grow seeds in wet cotton wool and observe (d) give a test on photosynthesis to see who has understood

(c).

The reason is the structure of a misconception rather than anything about plants. The children's idea came from experience — manure goes on soil, roots go in soil — so it will not be removed by words, however slow or however authoritative. (a) and (b) are telling at different speeds. (d) measures the problem again without addressing it.

(c) produces the only thing that works: the child's own observation of a case their idea cannot explain. A seed sprouting in cotton wool, with no soil anywhere, is evidence they gathered and cannot dismiss.

The general rule for this topic's questions: when the options contain one where children do or observe something that contradicts their belief, that is the answer.

Mistakes that cost marks here

• Choosing "explain again" or "tell them". Telling does not shift a conception built from experience.
• Treating misconceptions as carelessness or weakness. They are reasoned generalisations.
• Assuming a correct test answer means the idea has changed. Children hold both.
• Giving the demonstration without eliciting the prediction first. Without a committed prediction there is no conflict.
• Remediating the topic instead of the conception.
• Listing only "lack of apparatus" as the problem of teaching science. Language, safety, class size, assessment and teacher confidence are all named.
• Confusing mass and weight, or heat and temperature, in your own answer — the register applies to the candidate too.
• Proposing to mock a superstition. The method is to ask for evidence, not to ridicule.

In one line

Children arrive with explanations that worked for them, so science teaching competes with a theory rather than filling a gap; the only thing that shifts one is the child's own observation of a case it cannot explain, with their prediction committed first; and remediation targets the conception, not the chapter.

In the classroom

The most useful routine is the predict–observe–explain cycle, and it costs one minute. Before any demonstration: what will happen, and why? — written down, not shouted. Then the demonstration. Then: was it what you expected? why not?

Keeping a list of the predictions a class actually makes turns this heading into the teacher's own evidence. After a year it shows which ideas arrive with every cohort — those are the ones to plan a demonstration for in advance, rather than discovering them again each time.