Microorganisms Classification | Digital Science Unit | Interactive & Self-Grading Activities | Grades 4–6 Make learning about microorganisms exciting and easy to teach with this interactive digital unit!Perfect for Grades 4–6, this Microorganism Unit covers everything students need to know about the main types of microorganisms—including bacteria, viruses, fungi, algae, and protozoa—in a fun, engaging, and self-grading format. By the end of this unit, students will be able to:define what m