Science 4th Grade Unit 4: The Nature of Light Unit Summary: The purpose of this unit is for students to investigate the nature of light. Students will learn that the behavior of light is affected by different media such as: mirrors, lenses, and prisms. Through a variety of learning activites. Students will see how light interacts with matter; explore the physical attributes and uses of a convex lens, and a prism; see first-hand, the differences between opaque, translucent, and transparent material; and explore the reflection of light through the use of a mirror. Essential Questions: How does different media affect light? Vocabulary: transparent, opaque, translucent, reflection, convex lens, concave lens, prisms 5th Grade Science Unit 4: Beneficial & Microorganisms Unit Summary: The purpose of this unit is to understand that microorganism can be beneficial and/or harmful. The students will see how some microorganism can be controlled. Essential Questions: How can organisms we can't see harm us or help us? How can microorganisms be controlled? Vocabulary: Microorganisms, bacteria, harmful, beneficial