Your child fills the answer space in a Science test. They include definitions, examples and everything they remember about the topic.

Then the marked paper comes home.

The teacher has written: “Too vague,” “Explain why,” or “Answer the question.”

Your child feels frustrated. “But I wrote so much.”

Long Science answers can lose marks when they do not address the question, use precise scientific language or explain the links between ideas. The solution is to help your child choose relevant information and communicate it clearly.

This guide explains common problems and how parents can support better Science answers.

1. The Answer Contains Facts but Misses the Question

A learner may recognise a topic and write everything they know about it.

However, a question about enzymes might ask for a definition, an explanation of temperature effects or an interpretation of experimental results. Each requires a different response.

Example

Question: Explain why an enzyme-controlled reaction slows at a temperature well above the optimum.

An unfocused answer:

“Enzymes are biological catalysts. They are proteins. They help digestion. Different enzymes work on different substances.”

These statements do not explain the effect of high temperature.

A more focused answer:

“High temperature can denature the enzyme, changing the shape of its active site. Fewer substrate molecules can bind, so fewer enzyme–substrate complexes form and the reaction rate decreases.”

The second response connects the cause to the result.

What Parents Can Ask

“What exactly does this question want you to explain?”

Ask your child to identify the required outcome before writing.

2. Your Child Describes What Happens Without Explaining Why

A description states an observation or pattern. An explanation gives the reasons or mechanism.

Cambridge’s command-word guidance makes this distinction: descriptions identify relevant features, while explanations make relationships and reasons clear.

Example

Question: Explain why a metal spoon becomes warm when one end is placed in hot water.

A description:

“The spoon gets hotter.”

An explanation:

“Thermal energy is transferred along the metal by conduction. Free electrons transfer energy through the metal, and vibrations of particles also transfer energy to neighbouring particles.”

The explanation identifies how energy is transferred.

The detail needed will depend on the learner’s course and the question.

3. The Language Is Too Vague

Words such as “it,” “stuff,” “better” and “more” can hide important information.

Consider:

“The plant gets more, so it grows better.”

More of what? What changes? How is growth being measured?

A clearer answer might be:

“The plant’s height increased from 8 cm to 12 cm during the investigation.”

Scientific writing should identify the quantity, structure or process being discussed.

Help Your Child Replace Vague Phrases

Vague wordingMore precise wording“It goes up”“The temperature increases”“The particles get bigger”“The average distance between particles increases”“The enzyme dies”“The enzyme is denatured”“The plant does better”“The plant produces more leaves”“It moves across”Name what moves, where it moves and the process involved

Precision also requires scientific accuracy. For example, particles do not become larger simply because a substance expands.

4. Important Links Are Missing

Some answers contain relevant ideas but leave the reader to connect them.

Example

Question: Explain why increasing the surface area of a solid reactant can increase reaction rate.

An incomplete answer:

“There is more surface area and more collisions.”

A developed answer:

“A larger surface area exposes more reactant particles to the other reactant. This increases the frequency of successful collisions, so the reaction rate increases.”

The developed version explains how one step leads to the next.

A Useful Writing Pattern

Change → scientific effect → result

For example:

Larger surface area → more particles exposed → more frequent successful collisions → faster reaction.

Use this pattern when it suits the question. It is a planning aid rather than a rule for every Science answer.

5. The Answer Does Not Use the Data

When a question asks students to use results, a general statement may be insufficient.

Original Example

Light levelBubbles produced per minuteLow6Medium12High18

Question: Describe the relationship between light level and bubble production using the results.

A limited answer:

“More light means more bubbles.”

A more complete answer:

“Bubble production increases as light level increases, from 6 bubbles per minute at low light to 18 at high light.”

The second answer supports the pattern with values and units.

Do not make claims beyond the measurements. These results do not show what would happen at every possible light level.

6. Your Child Repeats the Same Point

Repetition can make an answer longer without adding meaning.

For example:

“The rate increases. It becomes faster. The reaction happens more quickly.”

All three sentences express essentially the same point.

During revision, ask:

“Does this sentence add a new relevant idea?”

Your child can underline distinct points, then remove repeated wording.

The aim is a complete explanation with enough detail to answer the question.

7. Memorised Answers Are Not Adapted to the Context

Learning definitions and key processes is useful. However, a familiar explanation may not fit every situation.

For example, knowing a definition of osmosis does not automatically explain why a particular plant cell loses water.

The learner needs to identify:

• Where water starts.
• Where it moves.
• The relevant water potential difference.
• The role of the partially permeable membrane.
• The effect on the cell.

Ask your child to connect the principle to the named organism, structure or experiment.

8. The Answer Includes Contradictions

A learner may write a correct statement and then add something that conflicts with it.

For example:

“The enzyme’s active site changes shape, but the substrate still fits exactly as before.”

The extra sentence weakens the explanation.

Encourage your child to check:

“Do any of my statements disagree?”

If they are uncertain about an idea, they should review the concept during practice rather than adding several incompatible possibilities.

How to Write Better Science Answers

Teach a short routine.

Step 1: Identify the Instruction

Is the question asking your child to describe, explain, compare, calculate or evaluate?

Step 2: Identify the Exact Focus

What structure, process, relationship or claim must the answer address?

Step 3: Select Relevant Ideas

Choose the facts needed for this question.

Step 4: Link the Reasoning

For explanations, show how the cause produces the effect.

Step 5: Use Evidence Where Required

Refer to the supplied results, diagram or passage.

Step 6: Check for Accuracy

Review scientific terms, units, contradictions and missing parts.

The mark allocation can help indicate the expected scope, but avoid assuming that every sentence earns one mark.

A Practice Activity: Improve the Answer

Question: Explain why a person’s breathing rate increases during exercise.

Original response:

“Exercise makes you tired. You breathe faster because the body needs more air and everything is working harder.”

Ask your child:

• Which cells need more energy?
• Which process releases that energy?
• What must be supplied?
• What waste gas must be removed?

An improved response:

“During exercise, muscle cells require more energy for contraction, so their rate of respiration increases. Breathing faster helps supply more oxygen for aerobic respiration and remove the additional carbon dioxide produced.”

This response identifies the cells, the process and the purpose of increased breathing.

The examples in this article are original teaching examples, not official examination answers or mark schemes.

How Parents Can Help Without Rewriting the Answer

Use prompts that encourage your child to think:

• “What does ‘it’ refer to?”
• “Why does that happen?”
• “Which result supports your statement?”
• “Have you explained the link?”
• “Does this sentence answer the question?”

Give them time to improve the response.

If they cannot explain the science aloud, they may need help understanding the concept before working on writing.

When Science Tutoring May Help

Additional support may be useful when your child repeatedly:

• Recalls facts but cannot apply them.
• Confuses descriptions and explanations.
• Struggles to interpret results.
• Uses inaccurate scientific language.
• Cannot explain corrections independently.

Share marked work with the tutor. Ask for a plan that addresses the specific difficulty and checks whether your child can apply the learning to new questions.

Online Science Tutoring With Glareminds

Glareminds provides one-to-one online Science tutoring, including Biology, Chemistry and Physics support and examination preparation.

Lessons can focus on understanding concepts, interpreting questions, using evidence and developing clear scientific explanations.

Share your child’s class, curriculum, examination board where relevant, and recent teacher feedback when making an enquiry.

A free 30–40-minute consultation and diagnostic session provides an opportunity to discuss learning priorities and a suitable support plan.

Frequently Asked Questions

Why does my child know Science but lose marks?

Recognising facts is different from selecting and applying them to a question. Review marked work to establish whether the difficulty involves understanding, interpretation, evidence or expression.

Are shorter Science answers better?

Answer length alone does not determine quality. A response should contain enough accurate, relevant detail to fulfil the instruction.

Should students use scientific keywords?

Yes, where appropriate—but terms should be used accurately and connected through meaningful reasoning. A list of keywords may not explain a process.

How can my child improve Science explanations?

Practise identifying the cause, explaining the mechanism and connecting it to the result. Use feedback and new questions to check understanding.

Should my child copy model answers?

Model answers can show useful structure. Afterwards, ask your child to explain the reasoning and answer a different question independently.

Help Your Child Make Every Sentence Useful

Start with one marked answer. Identify what the question required, what the response achieved and what was missing.

Then practise a clearer explanation using accurate language and relevant evidence.

To discuss personalised Science support, book a free consultation with Glareminds.

Call or WhatsApp: +2347039472179

Website: https://glareminds.com/