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Lesson 3 - How to Use the Light Microscope (01-01-24).pptx
1. How to Use the
Light Microscope
Lesson 3
Sci7Q2
2. • Explain the step-by-step process of
using a light microscope for observation.
• Demonstrate the correct
techniques for focusing and adjusting
the lighting on a light microscope.
• List the safety precautions to follow
when using a light microscope.
Objectives
3. The teacher shows students a basic,
unlabeled diagram of a light microscope.
The teacher asks students to discuss
and identify as many parts of the
microscope as they can based on their
prior knowledge.
Elicit
4. The teacher shows students the photos
of proper and improper ways to handle
the microscope and asks them whether
the photos depict the wrong or right
way.
Engage
5. The teacher allows students to read the
proper ways of using the light
microscope and lets them demonstrate
them.
Explore
6. The teacher presents the key concepts
related to using a light microscope,
explaining each step in the process. The
teacher uses visual aids, diagrams, and a
real microscope to help students
visualize and understand the procedure.
The teacher emphasizes the importance
of following safety precautions and
proper techniques.
Explain
7. 1. Hold the microscope with both hands.
Using a Microscope
8. 2. Set the nosepiece to the lowest
power lens.
Using a Microscope
9. 3. Add a coverslip to the slide on the
stage and secure with clips.
Using a Microscope
10. 4. Lower the lens by turning the focus
knob.
Using a Microscope
11. 5. Adjust the illuminator and diaphragm
for ideal lighting.
Using a Microscope
12. 6. Raise the lens slowly for clear focus;
use fine adjustment if available.
Using a Microscope
13. 7. Center the image by moving the slide
and readjust the mirror/diaphragm.
Using a Microscope
14. 8. Change lenses with minimal focusing;
use fine adjustment if necessary.
Using a Microscope
15. 9. Use one eye on the eyepiece, keep
the other open.
Using a Microscope
16. 10. Clean lenses with lens paper, avoid
touching with fingers.
Using a Microscope
17. 11. Raise the body tube, switch to low
power, and remove the slide when done.
Using a Microscope
18. 12. Always cover the microscope to
protect from dust.
Using a Microscope
19. The teacher encourages students to ask
questions and interact with the
microscope during the demonstration.
Elaborate
20. The teacher gives students a worksheet
with jumbled steps for using a light
microscope. Students sequence the
steps to show their understanding. The
teacher then discusses the correct
sequence as a class. Alternatively, the
teacher gives a true or false test on
using the microscope.
Evaluate
21. The teacher asks students to research
and highlight potential career paths that
require microscope skills. They share
stories or examples of discoveries made
using microscopes.
Assessment Measures
22. The teacher asks students to research
and highlight potential career paths that
require microscope skills. They share
stories or examples of discoveries made
using microscopes.
Extend
• Explain the step-by-step process of using a light microscope for observation.
• Demonstrate the correct techniques for focusing and adjusting the lighting on a light microscope.
• List the safety precautions to follow when using a light microscope.
The teacher shows students a basic, unlabeled diagram of a light microscope. The teacher asks students to discuss and identify as many parts of the microscope as they can based on their prior knowledge.
The teacher shows students the photos of proper and improper ways to handle the microscope and asks them whether the photos depict the wrong or right way.
The teacher allows students to read the proper ways of using the light microscope and lets them demonstrate them.
The teacher presents the key concepts related to using a light microscope, explaining each step in the process. The teacher uses visual aids, diagrams, and a real microscope to help students visualize and understand the procedure. The teacher emphasizes the importance of following safety precautions and proper techniques.
Using a Microscope. 1. Hold the microscope with both hands.
Using a Microscope. 2. Set the nosepiece to the lowest power lens.
Using a Microscope. 3. Add a coverslip to the slide on the stage and secure with clips.
Using a Microscope. 4. Lower the lens by turning the focus knob.
Using a Microscope. 5. Adjust the illuminator and diaphragm for ideal lighting.
Using a Microscope. 6. Raise the lens slowly for clear focus; use fine adjustment if available.
Using a Microscope. 7. Center the image by moving the slide and readjust the mirror/diaphragm.
Using a Microscope. 8. Change lenses with minimal focusing; use fine adjustment if necessary.
Using a Microscope. 9. Use one eye on the eyepiece, keep the other open.
Using a Microscope. 10. Clean lenses with lens paper, avoid touching with fingers.
Using a Microscope. 11. Raise the body tube, switch to low power, and remove the slide when done.
Using a Microscope. 12. Always cover the microscope to protect from dust.
The teacher encourages students to ask questions and interact with the microscope during the demonstration.
The teacher gives students a worksheet with jumbled steps for using a light microscope. Students sequence the steps to show their understanding. The teacher then discusses the correct sequence as a class. Alternatively, the teacher gives a true or false test on using the microscope.
The teacher asks students to research and highlight potential career paths that require microscope skills. They share stories or examples of discoveries made using microscopes.
The teacher asks students to research and highlight potential career paths that require microscope skills. They share stories or examples of discoveries made using microscopes.
