To mark the centenary of the First World War, Historica Canada has created this educational guide to assist teachers and students in learning about Canada’s involvement in this global conflict. Developed in line with the historical thinking concepts created by the Historical Thinking Project, this guide complements Canadian middle-school and high-school curricula. It invites students to deepen their understanding of the First World War through primary- and secondary-source research and examination, engaging discussion questions and group activities.