Languages and literacy · Science

Write a science explanation in English

Use a short fictional data set, a word bank and sentence frames to identify the factor compared, name the measured growth outcome and write a cautious explanation. Water is the only condition explicitly stated as equal.

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EAL learners using English for lower or upper secondary science. EAL coordinators may use the worked example when planning subject-language support. · Worksheet1 page · First page preview

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Teaching template
1
Write a science explanation in English
Learning goal: I can make a claim, support it with evidence and explain a limit.
Practice values
These invented values are for writing practice. They are not evidence from a real investigation.
• Group A: six hours of light each day; growth of 8 cm after two weeks.
• Group B: three hours of light each day; growth of 5 cm after two weeks.
• Both groups received the same amount of water.
Factor compared: hours of light each day. Measured outcome: growth after two weeks. Water is the only
condition explicitly stated as equal; other conditions are not specified.
Word bank
claim · evidence · result · compare · because · however · conclusion
Model paragraph
Hours of light is the factor compared, and growth after two weeks is the measured outcome. Group A
received six hours of light each day and grew 8 cm; Group B received three hours and grew 5 cm. Both
groups received the same amount of water, the only condition explicitly stated as equal. Group A grew 3
cm more in this example. However, these values do not show that light caused the difference, and other
conditions are not specified as equal.
Label the comparison
The factor compared is ____________________. The measured outcome is ____________________.
The only condition explicitly stated as equal is ____________________.
Build your paragraph
1. My claim is that ____________________.
2. The results show ____________________.
3. This evidence supports my claim because ____________________.
4. However, this example does not prove ____________________.
Read back
• I used both values accurately.
• I explained how the evidence links to my claim.
• I used because or however to connect ideas.
• I wrote a limit instead of claiming more than the data shows.

A teaching sequence

Write a connected English paragraph that makes a claim, quotes a result and explains what the evidence does and does not show.

Identify the factor, outcome and only stated control

Identify hours of light as the factor compared and growth after two weeks as the measured outcome. Both groups received the same amount of water; water is the only condition explicitly stated as equal, and other conditions are not specified.

Which condition is explicitly equal, and which conditions are unreported?

Copy and compare the two fictional results

Copy the two results accurately and compare them using more than or less than.

Have you matched six hours with eight centimetres and three hours with five centimetres?

Build evidence-linked sentences

Complete the sentence frames with evidence and a because explanation.

How does the because explanation connect the claim with the supplied values?

Add a limit and read back

Add a limit to the conclusion, then read the paragraph aloud and check each link.

Does however prevent claiming that these values establish a cause?

Before you teach

Look for the thinking behind an answer, choose the support your class needs and leave room for an independent response.

What to look for

Expected: hours of light is the factor compared; growth after two weeks is the measured outcome; water is the only condition explicitly stated as equal. Group A grew 8 cm and Group B 5 cm, so A grew 3 cm more in this example. These fictional values do not show that light caused the difference, and no other condition is stated as equal. Follow up: ask which additional condition, such as plant type, pupils would keep equal in a future comparison.

Give a little support

Highlight the values before writing, rehearse “The results show…” orally and provide the word bank. Accept a first draft with frames before asking pupils to remove one frame.

Take the idea further

Add a counterpoint beginning “However…” and suggest another observation or a repeated test that would help check the pattern.

Things to keep in mind

The values are fictional writing practice. Hours of light is the factor compared and growth after two weeks is the measured outcome. Water is the only condition explicitly stated as equal; no other condition is specified. These two examples cannot show that light caused growth.

Keep the idea. Make it yours.

Bring your topic, learning goal and class context to PLAI™, then review what you create.

Make one for my class

Ideas to try with your class

Sample teaching perspectives on what to try, what to adapt and what to watch for.

📖

Page-Turner Planner

This one-page Year 9 science writing template gives invented plant-growth values for two light conditions and explicitly says they are for writing practice, not real investigation evidence. Pupils make a claim, cite a result and explain a limit.

🍵

Tea at Breaktime

The supplied figures create a narrow comparison for practising an evidence sentence and an explanation. The disclaimer lets the teacher focus on writing without representing the numbers as measured science.

📝

Notes Between Bells

Underline the two values and their units, then model a sentence that reports the difference without claiming more than the data show. Ask pupils to identify one limitation separately.

📎

Paperclip Perspective

The figures are invented and cannot support a factual claim about light and growth. Use actual experimental data and a suitable method when teaching the science conclusion itself.

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