Besides the lectures listed elsewhere in this document, students are required to attend the Mathematics course offered for Part IA of the Natural Sciences Tripos, together with two other Natural Science subjects selected from the list given for the 50 per cent option (Biology of Organisms is also available).
The 25 per cent option is primarily intended for Natural Scientists who would like Computer Science to occupy one quarter of their first-year work. It is not the recommended option for those who wish to go on to Part IB Computer Science.