Stream Water Quality Summary

Part 1: Read and Interpret the Evidence

WALT: We are learning to summarise water testing activities and data into clear, factual sentences.

Success criteria: I can identify facts, use scientific vocabulary, and refer to specific measurements or observations.

Note: Write your answers in your science book.

Use the class data shown in the image: Poorman Stream was tested on 30/07/2026. The water temperature was 9.4°C. Record how many macro invertebrates of each species were found.

1. Which sentence is a scientific fact?

The stream looked yucky.

The water temperature was 9.4°C.

I liked the stream because it was pretty.

2. Calculate the total number of macroinvertebrates in the sample. Show your working.

3. Mayflies are bio-indicators because they can show the condition of a stream. What does their presence suggest about Poorman Stream? Use evidence from the data.

4. Complete the evidence notes using your own class results or the Poorman Stream data.

Location:

Temperature: °C

Clarity or turbidity:

pH level:

Macroinvertebrates or other bio-indicators:

Differentiation: Use the word bank, work with a partner, or explain your answer aloud before writing. You may draw or label the evidence before forming sentences.

Extension: Identify one pattern in the macroinvertebrate data and explain what it may suggest about the stream.

Part 2: Write a Four-Sentence Summary

WALT: We are learning to explain what our water quality findings reveal about the overall health of our local awa (stream).

Success criteria: I can write four factual sentences: the activity, the evidence, the conclusion, and the impact or action.

Use precise vocabulary such as clarity, turbidity, pH level, temperature, bio-indicators, and kaitiakitanga.

5. Draft your four-sentence summary. Use the sentence purposes if they help.

Sentence 1 – The activity: Include the stream and testing activity.

Sentence 2 – The evidence: Include specific measurements or observations.

Sentence 3 – The conclusion: Explain what the measurements indicate about the stream's water quality and why.

Sentence 4 – The impact: Explain how these conditions affect freshwater wildlife such as īnanga.

6. Improve this opinion so that it becomes a factual scientific sentence: “The stream looked gross and unhealthy.”

7. Suggest one action that young kaitiaki could take to protect the stream habitat.

Differentiation: Use the sentence starters, vocabulary list, and evidence notes. Learners may orally rehearse each sentence with a partner before writing.

Extension: Add a fifth sentence comparing the Poorman Stream results with another testing site or date. Include a possible reason for any difference.

Part 3: Review and Extend Your Thinking

WALT: We are learning to review scientific conclusions and identify further evidence needed to understand stream health.

Success criteria: I can check my summary against the criteria, identify useful further evidence, and explain how it would strengthen my judgement.

8. Check each success criterion you have achieved.

I included the location and activity.

I used at least two specific data results.

I explained what the evidence shows.

I described an impact on wildlife or an action for kaitiakitanga.

Support: Work with a partner, use the word bank, and explain your ideas aloud before writing. You may draw or label your evidence notes before forming sentences.

Extension: Compare two testing sites or two dates. Write an additional sentence explaining one pattern or change in the data, and suggest a reason for it.

9. What further test would help you make a stronger judgement about the stream's health? Explain why.

Differentiation: Choose from possible tests such as pH, turbidity, water temperature, dissolved oxygen, or a macroinvertebrate count. Explain your choice using a sentence starter.

Extension: Design a fair investigation that compares two stream sites. Identify the variable you would change, the measurements you would collect, and one variable you would keep the same.