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Materials:
Lesson: - Blackboard or whiteboard
- Projector
- Rope
Field Trip: - Appropriate clothing and footwear
- 2 portable radios
- Soap bubbler
- Appropriate transportation
Laboratory: - Safety Goggles
- Chart to fill out
- Glass prism
- Glass of water
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Process:
Lesson: At the begining of the lecture, teacher will do a demonstration with a slinky. In this demonstration, students will be asked to define the part they think of as a crest and the part which is a trough. Discussion will lead to the basic discovery of properties of transverse waves. Thisactivity should take about 10 minutes. The teacher will draw a simple diagram of a wave on the board, and explain that transverse waves have crests (ups) and troughs (downs). Sudents will be asked to come up with several examples of transverse waves. They should mention strings on guitar, oscilating rope, sound, water, light, etc. This step should take about 15 minutes. The teacher will hand out 10 conceptual problemsregarding wavesand walk from desk to desk to see how students understood the wave concept. Eachquestion will be done on the board by a student that has the right procedureand the right answer. This step should take about 45 minutes. A quizthat contains one multiple choice question and a simple calculation questionasking for the energy of the sound wave will be the ticket out ofthe class. This step should take about 5 minutes. Field Trip:
Students will meet in the clasroom at 8:00 o'clock where they will be introduced to the field trip instructions that have to be followed. We will gather up material needed for activities that will be performed and with take a bus to the park.Approximately 60 minutes.
At the park, students will be divided into 2 groups and to each group a radio tuned to the same station will be given. One group will be stationary and the other group will walk about 100 metars away and record the distance every time they hear interferance on their radio. When they finish, the groups will switch roles. Approximately 60 minutes.
Students will be divided into groups of 4 and they will throw stones into the lake and observe waves form. Each student will have to draw waves in the side view perspective formed by one stone, as well as a drawing of a wave formed by 2 stones. A ball will be thrown into the lake and its movement observed as waves pass underneath. Approximately 60 minutes.
Students will be divided into groups of 2 and they will blow soap bubbles in the air. They will have to observe and draw a model bubble in colours and describe what is happening to the colours as the bubble moves through the air. Approximately 60 minutes. Students will gather up and take a bus back to school. This will be the end of the field trip. Approximately 30 minutes.
Laboratory: Students will bring their data and drawings from the field trip and through a brief discussion review what they have learned about waves on the field trip. Approximately 10 minutes
Students will be given a piece of rope with a piece of tape on it. Students will shake the rope such that it makes nice waves. Each student will have to draw the rope in a position where the tape is at maximum, zero, and minimum amplitude. Approximately 30 minutes Students will start to write a formal laboratory report in which they will compare the rope experiment to the activities they did on the field trip. They will be required to relate this experiment to water waves, radio waves and light waves. The report will be due next class and will be counted as a summative assessment. 35 minutes + homework Adaptations:
Students who have learning disabilities will receive help according to their plan. Other students, teacher, or volunteers will also be available if extra help is required. |
