Introduction to the Microscope www. biologycorner

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Presentation transcript:

Introduction to the Microscope www. biologycorner Introduction to the Microscope www.biologycorner.com/portfolio/Microscope.ppt Care Parts Focusing Students will have their microscopes out, for reference as we go through each of the steps. As an introduction, students will be asked what kinds of things they can do with this tool.

Microscope Care Always carry with 2 hands Only use lens paper for cleaning Do not force knobs Always store covered Keep objects clear of desk and cords Teacher demonstrates how to hold the microscope, where the lens paper is located and how to use it. Students will be invited to turn the knobs and observe the stage as it moves up and down. Teacher will demonstrate how to store the microscope.

Magnification = Eye X Objective Microscope Parts 10X Eyepiece Body Tube Mag = 10 X 20 = 200X Arm Objective Lens 20 X Stage Stage Clips Coarse Focus This is the exact version of the microscope used in class. Students will be identifying the parts on the microscopes at their desks as we go along and what their functions are. Fine Focus Light Source Base Magnification = Eye X Objective

Using the Microscope Place the Slide on the Microscope Use Stage Clips Click Objective Lens to the lowest (shortest) setting Look into the Eyepiece Use the Coarse Focus Give students a slide from the “common things” set, each student will practice focusing and changing objectives.

Using High Power Follow steps to focus using low power Click the nosepiece to a longer objective Do NOT use the Coarse Focusing Knob Use the Fine Focus Knob to bring the slide into focus Have students exchange slides so they can look at different things, walk them through using the high power objective to focus slides. Emphasize not using the coarse objective during this process, as it will crack the slides. What can you find on your slide?