Each unit includes essential teaching pieces, practice questions, unit tests, answers, and detailed solutions. Challenger Questions provide students difficult questions that test their depth of knowledge. The complete solutions show problem-solving methods, explain key concepts and highlight potential errors. The resource is ideal for yearlong use by students, teachers, and parents at home or at school.

To help students understand the curriculum, THE KEY provides explanations for key concepts at the beginning of each unit and practice questions. A Table of Correlations at the beginning of each unit identifies the curriculum outcomes for the unit as well as the multiple-choice, numerical-response, and written-response questions that specifically test those concepts.

Final tests modeled after the diploma exams are provided in THE KEY. Students may use it to become familiar with provincial exam format and rigour.

Detailed solutions are provided for practice questions and unit tests. Solutions show the processes and ideas used in arriving at the correct answers and may help students gain a better understanding of the concepts being tested.