A Detailed Lesson Plan in Biology I.
Objectives: At the end of the t he 60 minute period at least 75% 0 f the student should be able to 1. Explain the uses of Microscope 2. Label the part of Microscope 3. Manipulate the Microscope properly
II.
Subject Matter: The Microscope th
A Book: Reece Jane B, Campbell Biology. 9 .ed. Pearson Education, Inc., publishing as Pearson Benjamin Cummings B. Materials: Microscope, Specimens, Extension wire, Charts, Paper, tape, Scissors, C. Value Integration: Self Reliance and Diligence III.
Procedure: A. Learning Activities Teacher’s Activity A.Review “Good Morning Class”
“Let u pray first”
Student’s Activity “Good Morning Ma’am”
(One assign student will lead the Prayer)
“Checking of Attendance, Say present and raise your hand if you are here”
(Students will say present and raise their hands as he teacher call their name)
“Please be settle, pick-up the pieces of paper under your chair”
(Students will pick up the pieces of paper under their chair)
“So how was your morning today?” “It was wonderful and Fun Ma’am” “That good, Yesterday we have discussed the differe nt types of cell, please get and pass pass your assignment assignment to the front”
(Student will get their assignments assignments and pass it to the front)
“Today we will, learn about the microscope, its uses and part and how to manipulate it”
B. Motivation “I have a pictures of different parts of microscope, you need to arrange the parts like what you’re yo u’re doing in a puzzle, do you understand”
“Yes Ma’am” (student will do the activity)
C. Lesson proper “Microscope is a device used to view small t hings that cannot be seen by naked.” “Can a microscope be able to view the plant and animal cell?”
“Yes ma’am”
“There are different types of microscope, we have the simple, compound and electric microscope”
(student listen attentively) “For our lesson today we will learn about the Compound
Microscope. Its parts and function and how to manipul ate it” (shows a picture or chart of a microscope)
Condenser: This is a system of different lens elements which is mounted beneath the stage of the microscope. Base: This is the bottom part of the microscope, it contains the lamp. Coarse Focus: Also referred to as rough focus, this knob raises and lowers the microscope stage quickly. It should only be used in connection with the low magnification lenses. Eyepiece Lens: Also known as ocular lenses, they magnify the image of the objective. Fine Focus: This focus knob moves the stage up and down in small steps. It is used to focus at different layers of the specimens. Head: This is the top part of the microscope. It carries the eyepiece(s) and other optical elements. Mechanical Stage: This type of stage is equipped with a slide holder and two knobs to turn. Nosepiece (or revolving nosepiece, turret): This part carries the objectives. It can be rotated. Objective Lens: This is a highly magnifying lens system; it is located close to the specimen to be observed. The image of the objective is then magnified again by the ocular lens which is close to the eye. Stage: This is the flat surface on which the slides are placed on. It can be moved up and down for focusing. Stage Clips: These are clips that hold the slide. Trinocular Head: This microscope head has three exits, two for viewing (for binocular vision) and a third exit to connect a camera.
The proper way of using the microscope ” (demonstration) First familiarize yourself with the microscope. Inspect the head. The head holds the optical elements, which include the eyepiece and eyepiece tube, the nose piece, and the objective lenses (there can be as many as 5 lenses). Study the arm. The arm connects the head to the base. The microscope is usually carried by the arm. Examine the base. The base holds up the microscope and provides the stage onto which samples are placed. The base also contains the illuminator and the focusing knobs (both fine and coarse). Second, prepare your slide. Position your sample between 2 pieces of g lass to make a slide.
(student listen attentively)
(student listen attentively while taking down notes)
“
(Student observe the demonstration of the teacher and write down important procedure)
Place the slide on the center of the stage over the glass hole. Move the 2 stage clips over the sides of the slide to secure it into place
Third, arrange the revolving nose piece and knobs. Turn the nose piece turret until the shortest lens is above your sample. It should click and feel rigid when it is in place. The shortest objective lens is the least powerful and is the easiest level to begin when magnifying an object. Twist the coarse focus knob (the large one) on the side of the base so the stage moves upward toward the short objective lens. Perform this without looking into the eyepiece. It's important to make sure the slide does not touch the lens. Stop twisting the coarse knob just before the slide contacts the lens. Fourth, focus the microscope. Look through the eyepiece. Arrange the illuminator until you've arrived at a c omfortable level of light. The brighter the illuminator shines, the better you will be able to see your specimen, but do set it to the maximum brightness if it hurts your eye. Twist the coarse focus knob the opposite way as you had before, so the stage moves away from the lens. Do this slowly until the sample begins to focus. Turn the fine focus knob the perfect the focus in greater detail. Fifth, magnify the image. Reposition the slide as necessary to situate t he area of desire study directly under you gaze. Switch lenses by rotating the nose piece turret to a longer lens. Perform necessary focusing adaptations. Sixth, put the microscope away. Turn off the power, lower the stage, remove your specimen and cover the equipment with a dust-repellent cover.
“Now, are you prepared to use the compound microscope?” “Okay, Very Good ”
“Yes Ma’am”
“Now let’s do the groupings because we only have ten pieces of compound microscope that is available to our laboratory”
(Student will count of from 1 to 10”)
“Count from 1 -10, number one will stay here followed by number Two and so on and so ford.”
(Student will proceed to their designated places)
D. Application “Each group has one microscope the 5 prepared slides, your task are to view the 5 specimen under the microscope and then draw what you have seen.”
E. Generalization “Can a microscope view the plant and animal cell?” “So microscope is used to?” “Correct, Microscope is an apparatus used in library to view an
(Student will do the activity; Student will use the microscope by group on their own, and view 5 types of specimens. After viewing they will draw what they have seen using the microscope.) “Yes Ma’am” “View small things that cannot seen by naked eye”
specimen, it has different type from simple to compound.” “Microscope has different parts, that you need to familiarized to be able to use the microscope properly” “Do you have any question, if you do please r aise your hand and ask a question regarding to our topic”
IV.
Assessment In a one whole piece of paper student will: A. Explain the importance of microscope (10 POINTS) B. Give or Label the parts that are ask in the picture below(14 POINTS)
Answer A-6 B-4 C-3 D-5
(Students raise their hand and ask questions)
C. Arrange the following sentence on how to use the microscope properly: Use 1to 6 number to show your arrangement (6POINTS) ___a Turn off the power, lower the stage, remove your specimen and cover the equipment with a dust-repellent cover. ___b Look through the eyepiece. ___c Turn the nose piece turret until the shortest lens is above your sample. ___ d Reposition the slide as necessary to situate the area of desire study directly under you gaze. ____e Inspect the head. The head holds the optical elements, which include include the eyepiece and eyepiece tube, the nose piece, and the objective lenses. ____ f Position your sample between 2 pieces of glass to make a slide. slide.
E-1 Assessment Table: Section II-Star II-Armstrong II-Mendel
V.
Correct Responds Number of Student 45/50 40/50 38/ 50
Percentage
Decision
90% 80% 75%
Proceed Proceed Proceed
Assignment In a ½ sheet of paper answer the numbers 1-10 on Test A and 1-5 on Test B, from your textbook page 12-14.
