The first law of thermodynamics Lesson plan

Long-term plan unit:

Fundamentals of thermodynamics

School:

Date:

Teacher Names:

Grade: 10

Number present:

Absent:

Topic:

The first law of thermodynamics.

Learning objectives that are achieved at this lesson

To apply the first law of thermodynamics to isoprocesses and adiabatic process; 

Lesson objectives

· Explain that this law is equivalent to the principle of the conservation of energy;

· State it in the form ΔU = Q + P·ΔV;

· Distinguish between the work done by the gas and the work done on the gas;

Assessment criteria

Ø    Write the first law of thermodynamics and define each variable in it;

Ø    Students can apply first law of thermodynamics by solving problems about it, using the equation ;

Ø    Solve problems that require the calculation of heat, using the formulas: Q = mL and Q = cm;

Ø    Solve problems that require the calculation of work, using the formulas: W = P·ΔV  and      W = P·;

Ø    Solve problems that require the calculation of the change in internal energy, using the formulas:  =  for a mono-atomic gas,  =  for a di-atomic gas,  =  for a tri-atomic gas.

Language objectives

Learners can:

- put technical terms into context

- define the terms:

Type of lesson

Formation of new knowledge

Values instilled in the lesson

Safety, Consideration to others, Co-operation, Opportunity for Life-Long Learning, Academic Integrity and Transparency, Respect for Self and Others

Cross-curricular links

Mathematics: Calculations using equations and positive and negatives signs, representing quantities coming into or going out of the system.

 Chemistry: atomic and molecular vibrations, kinetic molecular theory

ICT skills

Internet videos (www.youtube.com);Using of laptops for pHET simulations

Planned stages of the lesson

Planned activities at the lesson

Resources

Beginning

3 min

Preliminaries

Setting the mood. Greet students.

“Good morning everyone, please sit down.”

Introduction

Problem Question:

-   “All physical activity requires energy.”

-   “Where does the energy that we use come from?”

-         “When we eat food, we bring internal energy into our bodies directly. This increases .”

“This energy is eventually converted into work and heat that goes out of the body.”

slide 1

slide 2-3

5 min

Topic and lesson objectives

-   “Our topic for today is The First Law of Thermodynamics.”

-   “What do you think are the learning objectives?”

-   “The learning objective for today is to Understand and apply first law of thermodynamics.”

-  Explain that this law is equivalent to the principle of the conservation of energy.

-  State it in the form ΔU = ΔQ + PΔV

-  Distinguish between the work done by the gas and the work done on the gas.

-   “You must be able to (Assessment criteria):

Ø    Write the first law of thermodynamics and define each variable in it.

Ø    Students can apply first law of thermodynamics by solving problems about it, using the equation  

Ø    Solve problems that require the calculation of heat, work and the change in internal energy.”

slide 4

3+5 min

Recalling the variables in the first law of thermodynamics

-    “Please work in groups. Each group writes the most important information on A3 sheets of paper

-    Define the terms:

1 group:

2 group: Q   

3 group:  

Task: Be specific about work being done ON the gas and work being done BY the gas and the + and – sign)

-     After 3 minutes we will discuss your answers”.

Group work contains criteria:

- the definition has the physical meaning of the quantity;

- availability of formula;

- unit.

Students present their works, and other groups assess them in a clock-wise order, add information if needed.

slide 5

A3

slide 6

10 min

Presentation on the first law of thermodynamics

- Please answer the worksheet questions in your copy books while listening to the presentation.

- You should be able to find all the answers to these questions if you listen to the presentation carefully.

- Please read the questions before I start the presentation, so that you know what to look and listen for in the presentation.

slide 7

slide 8-18

Word document  “Questions about Presentation”

7+5 min

Statements game

slide 19

Pdf document  “Statement game”

3 sweets per student

2 min

Summarizing first lesson according to learning objectives.

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?

Health and safety regulations

Multiple Intelligences

-                     Visual students will watch the video

-                     Logical-Mathematical students will solve some difficult problems

Oral questioning and feedback.

The teacher will check the quality of answers on the students’ worksheets.

The output for the worksheet will serve as assessment

Questions during the lesson will also serve as formative assessment.

There should be good ventilation in the classroom

The temperature in the classroom should be appropriate for effective learning to take place, around 25°C.

Students should be reminded to adhere to all safety rules in the laboratory.

Reflection

Were the lesson objectives/learning objectives realistic? Did all learners achieve the LO?

If not, why?

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.