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Lesson 14

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MAXIMAZING THE USE OF OVER HEAD PROJECTOR AND THE CHALKBOARD

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Lesson 14

  1. 1. THE CHALKBOARD or THE CHALKBOARD orBLACKBOARD  a smooth hard pannel, usually green or black, for writing on with chalk
  2. 2. THE FOLLOWING PRACTICES OF DEDICATED PROFESSIONAL TEACHERS MAY HELP US IN THE EFFECTIVE USE OF THE CHALKBOARD :
  3. 3.  Write clearly and legibly on the board. Take note that there are children in the lastrows.  It helps if you have a hard copy of your chalkboard diagram or outline. Thathelps you to visualize the diagram or outline you like toappear on the chalkboard. Thatclean diagram and organized outline must match what you do on the chalkboard.  Don’t crowd your notes on the board work. By overcrowding your board work, your students may fail to see the key ideas. They may not see the trees because of the forest.  Make use of colored chalk to highlight key points. Color willalso make your board more appealing
  4. 4.  Do not turn your backto your class while you write on the chalkboard. Write side view as you talk. Don’t lose your eye contact with your class.  For the sakeof order and clarity, start to write from the left side of the board going right.  If you teach the grades and you think the lines on the chalkboard are needed for writing exercises, the provide the lines for your board.  Look at your board work from al corners of the room to test if pupils from all the sides of the room can read your board work.  If there is glare on the chalkboard at certain times of the day, a curtain on the window may solve the problem.
  5. 5. Overhead Projector  An overheadprojector is avariant ofslideprojectorthat isused to displayimages to anaudience.
  6. 6. The Overhead Projector Advantages of The OHP. Brown (1969):  The projector itselfis simpleto operate.  Theoverhead projector is used in the front of the room by the instructor, who has complete control of the sequence, timing, andmanipulationof his material.  Facing his class and observing students reactions, the instructor can guide his audience, control its attention, and regulatethe flow of informationin thepresentation.
  7. 7. The projected imagebehind theinstructor can be as large as necessary for allintheaudience tosee; it is clear and bright, even in fairly welllightedroom. Since thetransparency, as it is placed on theprojector, is seen by theinstructor exactlyas thestudentssee it on the screen, he may point, write, or otherwise make indications upon it to facilitate communications.
  8. 8. The stage (projection surface) of the projector is large (10 by 10 inches), thus allowing theteacher to write informationwithease or to show prepared transparencies. His/herwork appears immediatelyon the screen. It is specially easy for teachers and studentsto create their own materials for use in the overhead projector. There is an increasing number of highquality commercial transparencies.
  9. 9. Overhead Projection Technique Features of overhead projection : You can show pictures and diagrams, using a pointer on the transparency to direct attention to a detail. The silhouette of you pointer willshow in motionin thescreen.  You can use a felt pen or wax-based pencil to add details or to make points in the transparency during projection. The marks of water-based pens and pencils can be removed with a soft clothso thatthetransparency can be reused.
  10. 10. You can control the rate of presenting information by covering a transparency with a sheet of paper or cardboard (opaque material) and then exposing data as you are ready to discuss each point. This is known as the progressive disclosure technique. You can superimpose additional transparency sheets as a overlays on a base transparency so as to separate processes and complex ideas into elements and present them in step- by-step order.
  11. 11. You can show three dimensionalobjects from thestage of theprojector-in silhouetteif theobject is opaque, or in color if an object is made of transparentcolor plastic. For special purposes you can simulatemotion, on parts of a transparencies by using the effectsof polarized light. You can simultaneouslyproject on an adjacent screen other visual materials, usually slides or motionpictures, which illustrateor apply thegeneralizationsshown on a transparencies.
  12. 12. Other reminders on the effective use of the OHP :  Standoff to one side of the OHP whileyou face the students.Don’t talk to the screen.  Face the studentswhenyou talk, not thescreen.  Placethe OHPto your right, if you are right handed,and to your left, if you are lefthanded.
  13. 13.  Place theOHP on a table low enoughso thatit does not blockyou or thescreen.  Have the top of thescreen tiltedforward towards the OHP to prevent the “keystone effect”(where thetop of the screen is larger thanthe bottom). Avoid mistakeof including too muchdetailon each image. Avoid large table of figures. Don’t read thetext on your slide. Avoid too much text. Your presentation must be readable from afar.
  14. 14. We can learn from the experiences of others. Brown (1969). Enumerates effective practices. Let’s learn from them.  In primary grades, simple object like keys, leaves, and cutout paper shapes can be placed directly on the projector to stimulate children’s imagination and encourage discussion.  In English composition lessons, student themes or writing exercises can be reproduced in film by means of the heat or photo copy process. The teacher and students can analyze the writing for style and grammar as each example is projected.  In arithmetic, blank sheets of acetate and grease pencils can be given to selected students. Have them prepare solutions to homework problems so the class may evaluate and discuss their results.
  15. 15. Prepared by: Dannabel R. Duran Prince Nino A. Morado

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