We require simple sketches and/or (very simple) animations to illustrate an online science textbook. Ideas and templates for almost all illustrations can be easily found across the web, but these images must be custom made so as not to infringe on others' copyright. For example, sketches of atoms, molecules, cells, forces, and so on. Ability to make simple animations (e.g. a couple of frames showing a movement or transition) is desirable but not essential. You will get a list of what to illustrate, with descriptions and/or explanations, as well as examples where possible. Initially this will be a trial, but may become ongoing.