How the unit fits together
A rust investigation runs quietly in the background from Week 1 to Week 5 while each lesson builds the ideas needed to understand it.
Lessons
Each lesson has its own page with everything needed to run it, and its printable sheets underneath.
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1WEEK 1
Made to rust
The cross at our entrance, a card sort, six stations, and the rust jars sealed for five weeks.
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2WEEK 2
Does stuff disappear?
Weighing salt as it dissolves, and the same fizzing reaction in a sealed bag and an open beaker.
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3WEEK 3
Get it back
Recovering eight grams of dissolved salt — filtering against decanting — and plant resin as a reversible glue.
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4WEEK 4
The point of no return
Heating sugar until it stops being sugar, then chocolate against egg white on the thermometer.
CP1 -
5WEEK 5
Reading the evidence
The nails come out heavier. Graphing both classes, pulling apart the other class's method, and why the cross was made to rust.
CP2 -
6WEEK 6
Run it
Your own investigation on steel wool — what protects metal from rusting — recorded as it happens.
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7WEEK 7
Report and defence
A one-page recommendation to the person responsible for the rusting — and answering their hardest questions.
CP3