Expository Essays Eureka features the best of model expository stories written by English Language and Literature specialist, Diana Tham. Through her stories, as well as works by her students, Diana shows students how to apply model structures and writing techniques to their own writing, providing them with strategies that will help to crystallise their ideas and realise their potential. Using these essays as a guide, students will be able to hone the necessary writing skills they need to ensure exceptional scores in any examination.