1. Job
A roof cover and path edge do the same job: yes or no?
Help beside the question
Look at the two model jobs.
Answer guidance
Answer: No.
BUILD · SCIENCE · W12Classic · 2 MINUTES · Aut2·W4
Give a Rock a Job · Classic
Learning objective
I can name a rock use and explain which feature fits the job.
Success looks like
- Match two rocks to suitable example uses.
- Link the choice to a relevant feature.
- Name a further check before real use.
You are the materials team. Match three familiar rocks to three model jobs, then explain why the choice fits.
W12Classic · one 40-minute lesson
Seven stages, with one arrival and one exit. Use the route that helps you show your science today.
Classic is a standalone alternative, not extra required work.
Point, speak, sign, move cards, draw, write or direct an adult. Use one response mode; no separate participation form.
BUILD · SCIENCE · W12Classic · 4 MINUTES
Four clues to start
Choose a route. Four checks help your teacher decide what support is useful today.
Supported · 4 questions
2. Shape
Which card says thin flat sheets?
Help beside the question
Slate / granite / marble.
Answer guidance
Answer: Slate.
3. Wear
Which card names hard-wearing stone?
Help beside the question
Use the given feature table.
Answer guidance
Answer: Granite.
4. Pattern
Which card names a polished pattern?
Help beside the question
Use the indoor wall-panel clue.
Answer guidance
Answer: Marble.
Standard · 4 questions
1. Property
What is a material property?
Help beside the question
A feature we can observe or test.
Answer guidance
Answer: A feature of a material.
2. Reason
Why might slate fit an overlapping roof model?
Help beside the question
Think thin sheets.
Answer guidance
Answer: It can form thin flat sheets that overlap.
3. Purpose
Why might granite fit a busy path-edge model?
Help beside the question
Use the given card.
Answer guidance
Answer: It is described as hard-wearing and can be cut to shape.
4. Limit
Does this table approve a real roof?
Help beside the question
A model brief is simplified.
Answer guidance
Answer: No.
Stretch · 4 questions
1. Relevance
When could appearance be relevant?
Help beside the question
Read the job criterion.
Answer guidance
Answer: When a display or panel brief asks for a particular visual finish.
2. Comparison
Why is “favourite colour” weak for the path-edge job?
Help beside the question
Wear is the criterion.
Answer guidance
Answer: It does not provide evidence of wear resistance.
3. Variation
Will every specimen with the same rock name be identical?
Help beside the question
Natural materials vary.
Answer guidance
Answer: No.
4. Further check
Name a real-use question this card set does not settle.
Help beside the question
Think fixing, grip or load.
Answer guidance
Answer: For example: safe fixing, wet grip or structural loading.
BUILD · SCIENCE · W12Classic · 3 MINUTES
One rock for every job?
What should the materials team ask first?
No answer chosen yet. Think or discuss first.
BUILD · SCIENCE · W12Classic · 6 MINUTES
Make the science visible
Predict, model, explain
I chose __ for __ because its __ helps the job.
Choose each view. Describe the evidence before giving a conclusion.
A model roof, path edge and indoor wall panel have different purposes.
Worked explanation · reveal after thinking
Rock names describe varied natural materials. These cards give simplified example uses, not guarantees about every specimen. Do not use classroom matches to approve loading, grip, water resistance, fixing or real construction. A polished surface is not automatically a suitable walking surface.
Local explainer · 32 seconds · silent with captions
Use instead of part of the demonstration. It never autoplays and needs no internet.
Full text / no-video alternative
00–08 seconds · Start with the job
A model roof, path edge and indoor wall panel have different purposes.
08–16 seconds · Read the rock cards
Slate can form thin sheets; granite can wear well; marble can take a smooth polish.
16–24 seconds · Choose a relevant feature
Thin overlapping sheets fit the model roof brief. Colour alone is not the reason.
24–32 seconds · Keep a further check
These are simplified examples. Real work needs suitable source material, safety checks and installation advice.
Use printed cards, diagrams or clean teacher-screened specimens. No cutting, scratching, lifting heavy stone or building structures. All choices are for fictional model briefs.
BUILD · SCIENCE · W12Classic · 9 MINUTES
Use the evidence together
Use a clue; explain the group
Select a card, then select its group. Keyboard, pointing and paper routes work too. You can move a card when your reasoning changes.
Slate card
Granite card
Marble card
Select a card, then choose a group.
Would a small change help? · optional
You may ask for a clearer diagram, fewer cards at once, reading help or more thinking time. Tell your teacher, ask privately, point or pass. Your teacher will say what can change and check whether it helped. No extra sheet is needed.
Worked explanation · reveal after thinking
Slate: thin sheets. Granite: hard-wearing. Marble: polished pattern. Further checks include fixing and suitability of the actual piece.
BUILD · SCIENCE · W12Classic · 14 MINUTES
Show your science
Use today’s evidence
Fresh evidence desk
Choose the digital choices or matching paper. You do not need to complete both.
Supplied teaching models and coded observations. These are not measurements collected by this class. Codes refer only to this lesson’s evidence set.
| Rock card | Given useful feature | Example model use |
|---|---|---|
| Slate | Can form thin flat sheets | Overlapping roof pieces |
| Granite | Hard-wearing; can be cut to shape | Path edge / kerb |
| Marble | Can take a polish; often patterned | Indoor wall panel |
Read the model job.
Compare two rock cards.
Choose and explain a useful feature.
Name a further real-use check.
Supported · build your explanation
1. Choose
Match the thin garden sign to slate or marble.
Help: Look for thin flat sheets.
2. Choose
Match the busy path edge to granite or marble.
Help: Look for wear resistance.
3. Explain
Point to the useful feature for one choice.
Help: I chose __ because __.
Worked explanation · reveal after thinking
Slate for the thin sign; granite for the busy edge. Accept the named feature as a pointed or spoken reason.
Standard · build your explanation
1. Three jobs
Choose for sign, path edge and indoor panel.
Help: Use the rock card table.
2. Reasons
Give a property-based reason for each choice.
Help: Tie each feature to its job.
3. Check
Name one missing real-use check.
Help: Do not claim construction approval.
Worked explanation · reveal after thinking
Slate: thin sheets. Granite: hard-wearing. Marble: polished pattern. Further checks include fixing and suitability of the actual piece.
Stretch · build your explanation
1. Compare
Compare two candidate cards for one brief.
Help: Explain why one clue is more relevant.
2. Change brief
The wall panel becomes a walking floor. What new evidence matters?
Help: Think grip and wear.
3. Limit
Explain why a rock name alone is insufficient.
Help: Specimens and installation vary.
Worked explanation · reveal after thinking
A panel finish does not establish safe wet grip or floor wear. Named rocks vary; use evidence about the actual material and purpose.
Three new model jobs
Use the digital choices or the matching paper page. One response mode is enough.
Revisit the model
A model roof, path edge and indoor wall panel have different purposes.
Refine one explanation
Check that the explanation follows the supplied observation and keeps the stated limit.
Worked explanation · reveal after thinking
Slate: thin sheets. Granite: hard-wearing. Marble: polished pattern. Further checks include fixing and suitability of the actual piece.
BUILD · SCIENCE · W12Classic · 2 MINUTES
Two small checks
Supported · 2 questions
1. Match
Thin overlapping pieces: slate or marble card?
Help beside the question
Read the shape clue.
Answer guidance
Answer: Slate.
2. Reason
Choose the useful reason: thin sheets or short name?
Help beside the question
Use a property.
Answer guidance
Answer: Thin sheets.
Standard · 2 questions
1. Match
Which card fits the hard-wearing path-edge model?
Help beside the question
Use the supplied table.
Answer guidance
Answer: Granite.
2. Limit
Name one thing still to check before real use.
Help beside the question
Fixing, strength, grip or source.
Answer guidance
Answer: Accept any relevant real-use check.
Stretch · 2 questions
1. Explain
Why does the marble card fit the indoor patterned panel?
Help beside the question
Match feature and purpose.
Answer guidance
Answer: The card says it can take a polish and show a pattern.
2. Boundary
Why is that not a floor-safety conclusion?
Help beside the question
Different job and evidence.
Answer guidance
Answer: No wet-grip or floor safety test was supplied.
Choose one response mode for each check. This lesson ends here.
Next named lesson: Rock Jobs: Which Property Matters?.