Introduction to the Microscope

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Presentation transcript:

Introduction to the Microscope 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. Care Parts Focusing Source: https://docs.google.com/present/view?id=dfh23k67_1007cw3q23d6

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.

Eyepiece Body Tube Revolving Nosepiece Arm Objective Lens Stage 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. Stage Stage Clips Coarse Focus Diaphragm Fine Focus Light Base

Place the Slide on the Microscope Stage Clips are not necessary Click Nosepiece to the lowest (shortest) setting – Scanning Objective 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.

Refocus using the coarse (large) knob Once the slide is focused, rotate the nosepiece to the low power objective (medium sized) Refocus using the coarse (large) knob Move slide to get a centered view Give students a slide from the “common things” set, each student will practice focusing and changing objectives.

Your slide MUST be focused on low power before attempting this step Click the nosepiece to the longest objective Do NOT use the Coarse Focusing Knob Use the Fine Focus Knob to bring the slide 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?