Answer:
a. Educators use multiple learning and teaching approaches.
b. Adult Advocate
Step-by-step explanation:
Two characteristics of middle schools are:
a. Educators use multiple learning and teaching approaches: Teaching and learning should approach different methods or technologies to develop diverse skills, abilities, and prior knowledge of adolescents, such as digital tools. It will help to expand cultural background and also built new concepts and students will get more interested in studying.
b. Adult Advocate: Along with the development of knowledge, personal growth of an adolescent is also very important. Each student must be guided by one adult to support the student's personal development and met his need.