THE KEY is specifically designed to help students prepare for unit exams, final exams, and provincial exams.THE KEY helps students: review the entire curriculum, identify concepts that have been mastered and those which require additional review, become familiar with the format of provincial exams, and develop effective test writing strategies. Every KEY includes: A synopsis of the essential learning's, multiple choice, numerical and written response question formats, providing varying levels of difficulty, detailed explanations with step-by-step solution processes for all questions, tips and strategies to improve performance and test scores, practice exams to help develop test writing skills and increase student confidence.