3
2Keywords:
changes
corrosion
fair testing
metals
rust
self assessment
variables
Task: Identify the variables for testing how fresh water and salt water affect rusting. Assessment focus: planning a fair test.
2
9
4
23
2
3
5
6
5
4
4
2
2
3
1
8
4
4
1
5
4
4
5
4
3
