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| Activities using the Microscope |
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| You need to get acquainted with the usage of the microscope, for observing cells. On the screen is the figure of a light microscope. Study the parts and learn their names. |
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| The specimen to be observed is placed on a glass slide on the stage under an objective piece, in the middle of the microscope. Light is passed through the object with the help of a mirror and a condenser from below the stage. From the eye piece above you can see a magnified image of the object. You can get a sharp image by turning the side knobs. |
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| Peel off the thin epidermis (skin) in the inner layer of an onion. Neatly spread it in the centre of a glass slide on a drop of water. |
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| Add a drop of iodine solution and gently place the cover slip. You will observe neatly packed epidermal cells when you see through the microscope. |
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| Scrape the inside of your cheek using an ice-cream spoon. Spread the tissue in a drop of water on a glass slide. |
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| Add a drop of methylene blue and place a cover slip. Observe the cells (epithelial) under the microscope. |
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