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# Bernoulli's Principle

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### Transcript of "Bernoulli's Principle"

1. 1. Teaching Plan Subject: Physics Form 4 (Danalis Distributors Sdn. Bhd.) Learning Area: Forces and pressure Learning Objective: 3.6 Understanding Bernoulli’s principle Learning Outcome: A student is able to: • State Bernoulli’s principle • Carry out an experiment to show the effect of Bernoulli’s principle using a Venturi tube • Explain that a resultant force exists due to a difference in fluid pressure • Describe applications of Bernoulli’s principle • Solve problems involving Bernoulli’s principle Prior Knowledge and Skills Students have knowledge of the resultant force and pressure.
2. 2. Scientific Skills Observing, inferring and predicting. Thinking Skills Attributing, comparing and contrasting, grouping and classifying. Moral and Scientific Value • Having an interest and curiosity towards the environment. • Having critical and analytical thinking. • Being flexible and open-minded. Preparation 1. Instruct students to read text book from page 100 to 103 and practical book page 55. 2. Instruct students to prepare a plan of the practical report. 3. Review the teaching courseware and/other related teaching aids with animation or video clips. 4. Prepare power point presentation to be used in classroom teaching. 5. Prepare activity sheet for the lesson.
3. 3. LESSON x: 3.6 Understanding Bernoulli’s principle Pedagogy: Observation and classroom discussion with LCD presentation Time: 2 periods Development of lesson Learning Content T&L Strategies / Methods Activities Introduction (Work sheet is given out to students.) (30 – 40 minutes) Refer to text book page 100. (i) When a fluid moves, there is a change in its • Carry out Activity 3.6A, 3.6B, 3.6C text book page Carry out activities fluid pressure. 101. Teachers are advised to split the students in to gain an idea that (ii) The higher the fluid velocity, the lower the groups to do the 3 activities. The 3 activities are fluid velocity affects fluid pressure. placed in 3 separate stations to encourage as many fluid pressure. students as possible to participate actively in them. The groups rotate among stations. Writing • Students fill in answers in their worksheet as they do observations on the activities. work sheet. Scientific Skills : Observing, inferring, predicting Development 1 • Teacher states Bernoulli’s principle. (Text book page (10 – 15 minutes) Bernoulli’s principle states that the pressure of a 100) moving fluid decreases as the speed of the fluid • Teacher demonstrates Bernoulli’s principle using a Referring to text increases. Venturi tube. (Text book page 102) book, discussion.
4. 4. Development 2 • Students carry out experiment 3.5 (practical book (30 – 35 minutes) page 55). • Students write down their observations. Practical session. Write down the Scientific Skills : Observing, inferring and predicting. observations. Development 3 • Students are requested to refer to text book page (10 – 15 minutes) The airplane wing (an aerofoil) is shaped in such 103, Physics in Action to discuss applications. a way that the air flowing past it creates a lifting • View computer simulations to observe air flow over Refer to text book, force on it. The lift is strong enough to balance an aerofoil to gain an idea on lifting force discuss applications out the gravitational pull on the airplane. • Guide students to go through the questions in the of Bernoulli’s work sheet. principle. Scientific Skills : Connecting and predicting. Answer questions in Moral and Scientific Value: work sheet. • Having critical and analytical thinking. • Being flexible and open-minded. Closure • Guide students to summarise the lesson by referring (5 to 10 minutes) (i) Summary from work sheet. to their work sheet. (Go over the answers work sheet.) • Give homework to students – 3.6 Questions (text Summarising the book page 104) lesson. Moral and Scientific Value: Problem solving • Having an interest and curiosity towards the (homework) environment. • Cooperation
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