Step 6 Objective
Begin to use linear expressions to describe the nth term of an arithmetic sequence, justifying its form by referring to the activity or practical context from which it was generated.
- Examples of what pupils should
know and be able to do - Probing questions
- What if pupils find
this a barrier?
Probing questions
What did you look for in your sequence to help you find the nth
term?
How does this link to ... ? (Use the context that generated the sequence.)
Probe further to get pupils to justify specific parts of the generalisation – e.g. explain why 'multiply by 4' is part of your nth term.