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Which subject	Physics
What topic	Free Fall
What length (min)	30
What age group	Year or Grade 9
Class size	20
What curriculum
Include full script
Check previous homework
Ask some students to presents their homework
Add a physical break
Add group activities
Include homework
Show correct answers
Prepare slide templates
Number of slides	5
Create fill-in cards for students
Create creative backup tasks for unexpected moments

Lesson plan

Topic

Free Fall

Objectives

• Understand the principles of free fall and gravity.
• Calculate the acceleration due to gravity using the free fall formula.
• Analyze the effects of air resistance on falling objects.
• Conduct a simple experiment to observe free fall.

Materials

• Stopwatch
• Measuring tape
• Small balls (e.g., tennis balls, rubber balls)
• Scale (for measuring weight)
• Graph paper
• Whiteboard and markers
• Worksheets for calculations and observations

Grade/Age Group

Year/Grade 9

Subject

Physics

Class Size

20 students

National Curriculum Standards

This lesson aligns with the Next Generation Science Standards (NGSS), specifically focusing on the following:

• MS-PS2-2: Plan an investigation to provide evidence that the change in an object's motion depends on the sum of the forces on the object and the mass of the object.

Lesson Structure

Step Number	Step Title	Length (Minutes)	Details
1	Introduction to Free Fall	5	Briefly explain free fall and its relevance. Introduce gravity's role.
2	Discussion of Concepts	5	Discuss key data: acceleration due to gravity (9.8 m/s²) and neglect air resistance initially.
3	Calculation Method	5	Introduce the formula for calculating distance in free fall: ( d = \frac{1}{2}gt^2 ). Work through an example.
4	Experiment Setup	5	Prepare students for the hands-on experiment. Assign groups and distribute materials.
5	Conducting Experiment	5	Students measure the time it takes for the ball to fall a set distance and record data.
6	Data Analysis	5	Students analyze their results and calculate expected values for distances using their recorded times.
7	Review & Wrap-Up	5	Summarize findings, discuss the role of air resistance, and answer any questions.

Homework

• Complete the worksheet on calculations related to free fall and write a brief report on air resistance's impact on falling objects. Submit the assignment by the next class without presenting it in front of the class.

Assessment

• Monitor participation during discussions and experiments.
• Review completed worksheets for understanding of concepts and calculations.
• Check homework for comprehension without requiring presentations.

Additional Notes

Encourage questions throughout the lesson to ensure understanding. Include visual aids if necessary to reinforce concepts.

Lesson script