x Summary feature provides an additional review tool for you and reinforces key learning objectives. Review Questions allow you to demonstrate knowledge, identification, and comprehension of chapter material. STEM Connections are activities that help you relate the material presented in the chapter to the areas of science, technology, engineering, or math. Curricular Connections are activities that help you apply your welding knowledge to other other academic areas, including social studies, language arts, and critical thinking. Communicating about Welding improves your language skills by having you listen, write, and speak about welding-related topics.