1. Tools and Instruments 7-1.1Use appropriate tools and instruments (including a microscope) safely and accurately when conducting a controlled scientific investigation. Taxonomy Level: 3.2-B Apply Conceptual Knowledge

2. Tools It is essential for students to know that different instruments or tools are needed to collect different kinds of data. It is essential for students to know that different instruments or tools are needed to collect different kinds of data.

3. Microscope A microscope is a tool that is used to magnify the features of an object. A microscope is a tool that is used to magnify the features of an object. A compound microscope has two or more lenses A compound microscope has two or more lenses

4. Parts of a Microscope Eyepiece—contains the 10X magnifying lens Eyepiece—contains the 10X magnifying lens

5. Parts of a Microscope Coarse adjustment knob/focus— focuses the image under low power Coarse adjustment knob/focus— focuses the image under low power

6. Parts of a Microscope Fine adjustment knob/focus—focuses the image under high power Fine adjustment knob/focus—focuses the image under high power

7. Parts of a Microscope Objective lenses—two or three separate lenses that contain varying powers of magnifying lenses Objective lenses—two or three separate lenses that contain varying powers of magnifying lenses

8. Parts of a Microscope Stage and stage clips—supports and hold the microscope slide in place while viewing Stage and stage clips—supports and hold the microscope slide in place while viewing

9. Parts of a Microscope Diaphragm—controls the amount of light available Diaphragm—controls the amount of light available

10. Parts of a Microscope Light source—a mirror, external or internal light source that shines light through the object being viewed Light source—a mirror, external or internal light source that shines light through the object being viewed

11. Parts of a Microscope Arm—supports the body tube which connects the eyepiece to the set of objective lenses Arm—supports the body tube which connects the eyepiece to the set of objective lenses

12. Parts of a Microscope Base—supports the microscope Base—supports the microscope

13. Identify the parts of a microscope Using the information we have talked about fill out the microscope identification picture with a pencil. Using the information we have talked about fill out the microscope identification picture with a pencil.

14. How to use the microscope It is essential for students to use the microscope safely and accurately. It is essential for students to use the microscope safely and accurately.

15. How to use the microscope When looking through a microscope, the lighted area is the field of view. When looking through a microscope, the lighted area is the field of view.

16. How to use the Microscope Adjust the diaphragm until an adequate amount of light is available. Adjust the diaphragm until an adequate amount of light is available. To make the field of view brighter, open the diaphragm.To make the field of view brighter, open the diaphragm. To make the field of view darker, close the diaphragm.To make the field of view darker, close the diaphragm.

17. How to use the Microscope To view an object under the microscope To view an object under the microscope 1. First focus on the lowest power objective lens 2. Then change to the highest power objective lens if necessary.

18. How to use the Microscope When focusing the image under low power objective, use the coarse adjustment knob. When focusing the image under low power objective, use the coarse adjustment knob. 4X 4X

19. How to use the Microscope Use only the fine adjustment knob to sharpen the focus when using the high power objective. Use only the fine adjustment knob to sharpen the focus when using the high power objective. 4x, 10x, 40x 4x, 10x, 40x

20. How to use the Microscope To calculate the magnification of objects seen through a microscope, multiply the magnification of the eyepiece times the magnification of the objective lens being used. To calculate the magnification of objects seen through a microscope, multiply the magnification of the eyepiece times the magnification of the objective lens being used.

21. How to use the Microscope Objects on the slide move in the opposite direction when being viewed through the eyepiece (for example, if the slide is moved to the left, the object being viewed appears to move to the right). Objects on the slide move in the opposite direction when being viewed through the eyepiece (for example, if the slide is moved to the left, the object being viewed appears to move to the right).

22. It is essential for students to use care when handling the microscope. A microscope should be held and carried with one hand under the base and one hand on the arm. A microscope should be held and carried with one hand under the base and one hand on the arm. Some microscopes may have a mirror as the light source. Care should be taken not to aim the mirror directly at the Sun. Some microscopes may have a mirror as the light source. Care should be taken not to aim the mirror directly at the Sun.

23. How to draw what you see! http://farm4.static.flickr.com/3602/3492708000_b158ca7f6a.jpg

24. How to draw what you see! http://www.microscope-detective.com/image-files/prepared-mount- slides.jpg

25. How to draw what you see! http://4.bp.blogspot.com/- UenoySQlsYA/TnfLLkhsSMI/AAAAAAAAAAc/TcZg_j23rbo/s1600/slide%252Bdr awing1.jpg