An A level activity (RISP) about sequences. The first activity in this set, provided by RISPs, draws on defining a sequence, the nth term and identifying convergent and divergent increasing, decreasing, oscillating and periodic sequences. Second risp activity tackles sequences, risp 14 is another activity that does the same. The former is a superior consolidator, while this one tends to work better as a starter on the subject. Risp 20 introduces arithmetic series/sequences and sequences generally.