The Think IB Physics Site is organized to help you plan lessons. Step 1. Choose whether the topic you're teaching is standard level core, additional higher level, or an option topic. The subfolders each represent approximately one to two lessons, for example, specific heat capacity and latent heat within thermal physics. The lesson hub page gives the key aims and some concise suggestions about how to incorporate theory of knowledge, nature of science, or international mindedness. You will find the resources in the navigation pane to the left in the following order. Activities or problem-based learning required practical work with teacher notes, multiple choice questions, problems with accompanying solutions on their sub pages, optional practical work and the test.