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?
Examples of what pupils should know and be able to do
Generate sequences from practical contexts, including:
- finding the first few terms of the sequence;
- describing the general (nth) term, and justifying the generalisation by referring to the context;
- when appropriate, comparing different ways of arriving at the generalisation.