Resources Our Resources provide a range of tools to expand your Lesson Study experience. Toolbox Facilitation tools and content resources to help you deepen your Lesson Study work. Research Lesson study overviews and reports, press coverage, and other material about Lesson Study and its effectiveness. Courses Classes to deepen your understanding of Lesson Study TTP Resources on Teaching Through Problem-solving, a problem-solving-based approach to mathematics. School-wide Lesson Study Tools to help you grow Lesson Study throughout your school.