This is a methodology for teaching the relationship between grain size and magma cooling rates, using sodium chloride as a model, aligned with the Curriculum for Wales, which is part of a scientific paper available online. Using ordinary materials available in the classroom or the home, the understanding of pupils on this topic can be improved considerably.

These word searches are differentiated, with three available levels: level one: find a few words in the grid and define them level two: find a higher number of words in the grid and define them level three: define key words and find them in the grid These word searches are designed to teach pupils in key stage three about different types of microbes, a little about their ultrastructure and a little about disease and immunity. The document comes with blank and completed grids, so you will never look foolish in front of your pupils when they can’t find a word.