PHY_10_14_V2_LP_The law of universal gravitation

Long-term plan unit:

School:

Date:

Teacher name:

Grade 10 Physics

Number present:

absent:

Theme of the lesson

The law of universal gravitation

Learning objectives that are achieved at this lesson(Subject Programme reference)

to explain physical meaning of inertial and gravitational mass;

to explain the characteristic curve of the gravitational intensity and potential of material point and the distance;

to use the law of universal gravitation in problem solving.

Lesson objectives

Language objective Describe Gravity as a field offorce using appropriate terminology;

Express the Law of Universal Gravitation in mathematical form

Explain Earth’s gravitational force.

Discuss weightlessness in space.

to use the law of universal gravitation in problem solving.

Assessment criteria

Could explain physical meaning of inertial and gravitational mass;

Could explain the characteristic curve of the gravitational intensity and potential of material point and the distance;

could use the law of universal gravitation in problem solving.

Language objective

MUST: remember key words

SHOULD: describe relationships of field strength with help

COULD: describe relationships of field strength independently and how this affects physical phenomena using technical vocabulary

Values instilled at the lesson

Specify the values of the Integrated Educational programme as well as national, universal values, which are aimed to be instilled at this lesson.

Values are instilled by/through ... (description of activities and / or content).       

Cross-curricular links

Mathematics to derive equations 

ICT skills

Use of animations in presentation.

Previous learning

The Newton's laws.The concept of force, mass, distinguish the force of elasticity, gravity, body weight.

Course of the lesson

Planned stages of the lesson

Planned activities (replace the notes below with your planned activities)

Resources

Beginning

0-5 min

Organizing time.

Concentration of attention

Post a lesson goal.

Trigger Activity:  Stand in front of the class and ask the class if marbles will float when thrown upwards.

Verify by throwing one marble up into the air.

Recalling previous knowledge about gravity by asking the students what they understand about it.

Marbles

Middle

5-35 min

Introduce the concept of a gravitational field as a region in space where a body exerts a force of attraction on another body.  Gravitational field strength, g, is defined as the force per unit mass acting on any object placed there.

Students will access Gravity Lab applet online and explore the effects of gravity between different masses and different separation distances.

Introduce, its formal definition and explaining the various terms in the equation.

Properties of gravitational force are explained and some interesting facts about gravitational force is introduced. A comparison between electric force and gravitational force is made.

Students will be given two problems to solve.

Students, in pairs, are to design an experiment using Gravity Lab applet and utilize the graph plotting function to plot the graph of gravitational force vs. separation distance to illustrate the relationship

Introduce the definition of gravitational field strength as

and show how the relationship can be derived from  and.

Students are to solve a problem applying  and then make the deduction that g is almost constant near the Earth’s surface. 

PHY_10_14_V2_P_The law of universal gravitation

https://phet.colorado.edu/en/simulation/gravity-force-lab

End

35-40 min

Short summary to what has been covered in the lesson.

Provide chance for students to ask questions and clear any doubts present.

Reflection

Initiate students' reflection about their emotional state, their activities, ensure the assimilation of the principles of self-regulation and cooperation.

Each student has a choice of answers to one question:

- What did you learn in the lesson?

- At what stage did the lesson have difficulty and why?

- What would you advise yourself

Homework for the day is of investigative nature and is left as a pair work

PHY_10_14_V2_DM_The law of universal gravitation

Additional information

Differentiation – how do you plan to give more support? How do you plan to challenge the more able learners?

Assessment – how are you planning to check students’ learning?

Cross-curricular links
Health and safety check
ICT links
Values links

Advanced students can assist other students with problems. Advanced students can research information of the interference of sea waves that form ‘rough waves’

Question of students and review of questions related to the learning objects. Student will be asked questions during the activity, notebooks will be reviewed, homework will be checked and exam questions related to this topic will be reviewed.

Active learning methods.

Reflection

Were the lesson objectives/learning objectives realistic? What did the learners learn today? What was the learning atmosphere like? Did my planned differentiation work well? Did I stick to timings? What changes did I make from my plan and why?

Use the space below to reflect on your lesson. Answer the most relevant questions from the box on the left about your lesson.

Summary evaluation

What two things went really well (consider both teaching and learning)?

1:

2:

What two things would have improved the lesson (consider both teaching and learning)?

1:

2:

What have I learned from this lesson about the class or individuals that will inform my next lesson?