# Day 39 · Make a water trail worth using

**Start:** “Who could your trail help? Choose one question for them.”

**Purpose:** Create and review a useful audience-specific explanation, using water science accurately and identifying model limits.

## Prepare

Read today's complete model and two contexts before the session. Paper, a pencil and the full written picture words are sufficient. Optional actual water work follows [ordinary preparation](../teacher/PREPARATION.html); the teacher chooses suitable familiar materials/instruments. Use today's three routes without assigning a fixed learning-style label.

## Run the session

1. Reconnect: choose a question from puddle, outside drops, cloud-to-land rain or tap source. Do not demand the same product from every child.

2. Model: a visitor asks “Will this model tell us when it rains?” Show a useful three-process trail with “This is a model. It does not forecast the weather.” Discuss the actual purpose of an explanation.

3. Try: make a paper guide, labelled drawing, three spoken/dictated lines or interactive Water Trail. Every route includes the chosen audience/question, relevant process/link and a limit.

4. Compare: test the guide on the supplied visitor question; a child can play the visitor quietly or use the text check. Ask what meaning is clear and which arrow needs a name. No forced peer interaction.

5. Make: improve one specific part and keep a short before/after explanation of the revision. Add a second possible path only if it serves the purpose; a longer trail is not automatically better.

6. Exit: “My trail helps __ understand __. I changed __ because __.” Fresh D is available after this teaching.

## Three ways in

### Small guide

Make one compact paper/card explanation and ask a supplied visitor question of it. Choose words/drawing/dictation freely.

**Worked ordinary reasoning:** My guide explains evaporation for someone asking about a smaller puddle; it does not measure an amount.

### Interactive path

Choose a valid two-link path in Water Trail, inspect its full text result, change a destination and explain how that serves the chosen question.

**Worked ordinary reasoning:** Both paper and digital versions are models; neither makes a weather prediction or awards a science grade.

### Audio-ready message

Dictate/read a short original explanation with the written script as a full equivalent; recording is optional and not part of assessment.

**Worked ordinary reasoning:** My message names the process and its direction, answers the chosen question and gives one useful limit.

## Look and choose the next teaching

Purposeful accurate explanation, audience/question, sensible revision and source/model limit.

For a beautiful but unclear product, reteach one arrow's meaning before adding decoration.

## Today's complete resources

[A04 · whole labelled picture](../aids/A04.svg) · [A04 · complete picture words](../aids/A04-alternative.html)

[A05 · whole labelled picture](../aids/A05.svg) · [A05 · complete picture words](../aids/A05-alternative.html)

[A13 · whole labelled picture](../aids/A13.svg) · [A13 · complete picture words](../aids/A13-alternative.html)

[C17](../contexts/C17.html)

[C18](../contexts/C18.html)

[H09](../home/H09.html)

[X09](../projects/X09.html)

[Short child start](../child/day-39.html) · [Written read-aloud](../narration/day-39.html) · [Water Trail and paper](../interactive/index.html)

Partial opportunities: AC9S4U02, AC9S4H02, AC9S4I04, AC9S4I06 · [Full mapping and limits](../teacher/CURRICULUM.html)

<details>
<summary>Grown-up help</summary>

Allow source access and neutral reading/support. Keep supplied story, child response, helper actions and actual observation distinct. Use component-specific criteria after the response, not a model answer before it. Suggested six-move timing 4/7/12/8/6/3 minutes may be split; there is no performance timer.

Modified from [Year 4 Science alignment](https://www.qcaa.qld.edu.au/downloads/aciqv9/science/curriculum/ac9_science_yr4_as_cd_alignment.pdf), [standard elaborations](https://www.qcaa.qld.edu.au/downloads/aciqv9/science/assessment/ac9_science_se_yr4.pdf) and [Years 3–4 techniques and conditions](https://www.qcaa.qld.edu.au/downloads/aciqv9/science/assessment/ac9_science_tc_yr3-4.pdf), © State of Queensland ([QCAA](https://www.qcaa.qld.edu.au/copyright)) 2023, covered [CC BY 4.0](https://creativecommons.org/licenses/by/4.0/) with exceptions. Our task criteria are original; these are not official A–E bands. Actual folio and on-balance professional judgment remain necessary.

</details>