7th Grade Life Science Curriculum Unit 2: Cell Biology Microscope Use Lesson 1: Cartwheels Objectives: After completing the lesson, students will be able to describe how the image of an object changes as a magnifying lens is moved further away from it. Key Questions: What makes a good magnifier? What happens to objects when you magnify them? Overview: This activity will allow students an opportunity to investigate how a convex lens changes the shape and appearance of an object. Time required: 1 class session Materials: magnifying glasses, newsprint or other printed material Procedure: See "What to Do" section in The Microscope Book, pg. 14, ahead of time in order to provide appropriate instructions and data sheet. An alternative activity would be to use water drop lenses instead of a magnifying glass. See the next page for directions. Assessments: Students describe how a letter or object will change when using a magnifying lens. Homework: Students create a list of household items that might magnify or change the image of an object. OUSD Science Content Standards (State of California Science Content Standards): Investigation and Experimentation 1a References: Prentice Hall - Focus On Life Science textbook ­ page 11 Table of Contents Microscope Use (2 weeks) Lesson 1 Cartwheels (1 day) Water Lenses Lesson 2 The Compound Microscope (4+ days) My Microscope Study Sheet Microscope Rules for a Reason Microscope License Lesson 3 How Big Is It? (1 days) Lesson 4 Give Me An "e" (1-2 days) Fake or Counterfeit? Lesson 5 Sew Long (1 days) Lesson 6 Sounds Fishy to Me (1 days) Lab Helper (Slide Organize) Cell Structure (2 weeks) Lesson 7 Water, Water Everywhere (2 days) How to Label Microscope Diagrams Lesson 8 Greensleeves (1 day) Lesson 9 Onion Rings (1 day) Lesson 10 Don't Be Cheeky (3+ days) Cell Project Metaphors: More Cell Project Practice Cell Processes (1 week) Lesson 11 Diffusion (2 day) Lab Handout ­ Screen Play Lesson 12 Mitosis (2 days) Curriculum Resources Teaching Cartoon Project (Assessment Strategy) Learning Logs and Journaling Show Don't Tell!