PSLE Ultimate Science Workbook (Open-Ended Questions) is a complement to the PSLE Ultimate Science Guide. The Workbook consists of 27 chapters arranged according to the themes parallel to the guide. In each chapter, similar open-ended questions are grouped together to facilitate learning of the concepts. Detailed answers are provided for all questions. The Workbook serves as a good companion for pupils to revise the concepts learnt in the Guide and gain the confidence to ace the science examinations.