Class 7 Science tuition: the year everything becomes a process

Nutrition in plants and animals, respiration, transport, fibre to fabric, heat, acids and bases, physical and chemical changes, weather and climate, soil, motion and time, electric current, light, and water and forests.

Long list, one organising idea. Group the chapters by what they ask of a student rather than by their titles:

• Process chapters - nutrition, respiration, transport, digestion, the water cycle. These are the majority, and they are marked on sequence and consequence.
• Distinction chapters - heat versus temperature, physical versus chemical change, breathing versus respiration. Each turns on one precise difference that the paper tests directly.
• Quantitative chapters - motion and time. The first school science with a formula and a graph.
• Diagram chapters - light and electric current, where ray diagrams and circuit diagrams carry marks of their own.

Knowing which group a chapter belongs to tells you how to revise it, which is more useful than a chapter list. Our free Class 6 Science worksheets cover the answer habits this year assumes.

Because a process can be interrupted. Once a chapter is a chain of steps, the paper can ask what happens if a step is removed, why the order cannot change, or what a blockage does downstream - none of which can be answered from memorised labels.

Consider photosynthesis. A student who has learned it as a definition can write the word equation. The Class 7 question is more likely to be: why does a plant kept in a dark cupboard die, or why does a plant with its leaves removed struggle even though the roots are intact.

Both need the chain: light is the input, leaves are where it happens, food is the output, and everything else depends on that output. A labelled diagram does not contain that. A sequence does.

The home test is one question: ask your child to explain the process without naming any part. If they can only recite the labels, they have the Class 6 answer in a Class 7 year - the same pattern described on our Class 6 Science page, one stage further on.

Breathing versus respiration, heat versus temperature, and physical versus chemical change. Each has a one-line test, and each is asked in some form nearly every year.

Three pairs, three tests worth learning precisely:

• Breathing versus respiration. Breathing is taking air in and out. Respiration is the release of energy from food inside the cells. Breathing supplies respiration; they are not synonyms, and using them interchangeably costs the mark.
• Heat versus temperature. Heat is energy transferred; temperature is how hot something is. A bucket of warm water contains more heat than a cup of boiling water at a higher temperature - which is the example that makes it click.
• Physical versus chemical change. One test: was a new substance formed? Melting ice, no. Burning paper, yes. Reversibility is a useful clue and not the definition.

These are cheap marks and they are lost every year, because each looks like a definition to memorise and is actually a distinction to apply.

Ray diagrams and circuit diagrams carry marks of their own, and motion and time introduces the distance-time graph - the first time school science asks a student to read information off a line.

Two mechanical skills arrive this year, and both are marked independently of whether the science is understood.

Ray diagrams. Marks are for arrows showing direction, rays that actually meet the mirror or lens line, and correct labelling. A beautiful diagram without arrows scores poorly, which children find genuinely unfair until it is explained.

The distance-time graph. A flat line means stationary; a steeper line means faster. Reading that off a graph is a separate skill from calculating speed with a formula, and Class 7 asks for both. It is also the first appearance of something that runs right through Class 10 and beyond.

Both reward practice with a pencil rather than reading, which is worth saying because Science revision defaults to rereading.

By teaching each process as a sequence with consequences, and by drilling the three distinctions the paper tests every year. Reciting definitions is what most Class 7 revision does and it is the least useful thing available.

The method follows the subject. For a process chapter, we build the chain and then break it deliberately: what happens if this step stops? For a distinction chapter, we work the one-line test until it is automatic. For diagrams, we draw them from memory rather than copy them.

The diagnostic that matters at the start of Class 7 is whether last year's Science habits arrived - giving a reason, matching answer length to marks, labelling diagrams. Where they did not, that is a fortnight's work and it makes the whole year easier.

See Class 7 tuition for the year, Science tuition Class 6 to 10 for the chain, and the free science quiz which explains every answer. Fees are published by class, and the free assessment is 20 minutes.