Full lesson	Create for a teacher a set of content for giving a lesson, beginning with the lesson plan. Each new block of materials must begin with an H1 heading (other subheaders must be H2, H3, etc). When you describe required pictures, write those descriptions in curly brackets, for example: {A picture of a triangle}
Which subject	Chemistry
What topic	surfactants
What length (min)	30
What age group	Doesn't matter
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

Surfactants

Subject

Chemistry

Grade/Age Group

Middle School/Grades 6-8

Objectives

• Understand the definition and function of surfactants.
• Identify applications of surfactants in everyday life.
• Demonstrate the effect of surfactants through a simple experiment.

Materials

• Whiteboard and markers
• Projector and screen
• Slides on surfactants (definition, examples, applications)
• Petri dishes
• Water
• Dish soap (as a surfactant)
• Food coloring
• Droppers or pipettes
• Paper towels for cleanup
• Handouts with summaries and homework questions

Length of Lesson

30 minutes

Class Size

20 students

National Curriculum Standards

This lesson aligns with the Next Generation Science Standards (NGSS) for middle school chemistry, focusing on the structure and properties of matter.

Lesson Structure

Step Number	Step Title	Length	Details
1	Introduction to Surfactants	5 min	Briefly introduce the topic and explain surfactants and their importance in various domains.
2	Presentation	10 min	Use slides to present definitions, examples, and everyday applications of surfactants. Encourage questions.
3	Demonstration	5 min	Show the effect of a surfactant by adding dish soap to water with food coloring and observe how it breaks the surface tension.
4	Student Experiment	7 min	Divide the class into small groups with petri dishes. Let students experiment with various amounts of dish soap and observe the reaction.
5	Class Discussion	2 min	Engage students in a short discussion on their observations and thoughts about the surfactants used.
6	Homework Assignment	1 min	Hand out homework materials; instruct students to read an article on surfactants and answer questions provided.

Homework

• Read the assigned article on surfactants.
• Answer the questions on the handout regarding their applications and effects.
• Homework will be collected for grading but will not require presentation in front of the class.

Additional Notes

• Ensure that equipment and materials are prepared and organized before the class starts.
• Encourage students to think critically about the role of surfactants in both nature and industry.

Lesson script