A level Investigations with Omnigraph is intended for A level (and beyond) mathematics students. The Student's booklet gives over 200 starting points for student's own investigations.

The Teacher's Pack gives hints about the investigations and (where appropriate) answers. It includes a disk containing over 200 Omnigraph examples for use by students while working the booklet. The Teacher's Pack includes one Student's booklet.
One copy of the Teacher's Pack is essential to use the materials (and you need Omnigraph itself, of course!).