The STI interviews for shortlisted candidates take place on 29 and 30 October 2026 at the concerned schools. Most committees keep the interview short, but many ask you to teach a small topic on the spot, either to the panel or to a few students. This short STI demo lesson 2026 often decides how confident and “teacher-like” you look, and it can make the difference in your interview marks.
This guide gives you subject-wise demo lesson topics for primary, elementary and secondary levels, a simple 3-minute lesson structure that works for any subject, the mistakes to avoid, and a free STI demo lesson planner tool that builds your plan in seconds.
Quick facts: STI interviews: 29–30 Oct 2026 at the concerned school · Interview marks: up to 5 out of 100 · Final merit list: 31 Oct 2026, 10:00 AM · Agreement letters: 2 Nov 2026 on the STI portal.
Table of Contents
- Why the STI Demo Lesson 2026 Matters
- How the STI Demo Lesson Usually Works
- Free STI Demo Lesson Planner
- Subject-Wise STI Demo Lesson Topics
- The 3-Minute Demo Lesson Formula
- Classroom Skills the Panel Watches
- Mistakes That Cost Marks
- After the Interview
- Frequently Asked Questions
Why the STI Demo Lesson 2026 Matters
In the School Teaching Interns merit, most marks come from your academic record, while the interview carries up to 5 marks. That sounds small, but in a district where hundreds of candidates are separated by fractions of a mark, 2 or 3 extra marks can move you several places. You can estimate your total with our STI merit calculator.
A good demo shows the committee three things at once: you know your subject, you can explain it simply, and you can control a class. That is exactly what a school head wants from an intern.
How the STI Demo Lesson Usually Works
There is no single fixed format across Punjab, because each school committee runs its own interview. Based on past rounds, expect one of these:
- Topic of your choice: You are asked to teach any topic of the level you applied for.
- Topic from the textbook: The panel opens a Punjab Textbook Board book and points to a lesson.
- Explain verbally: No board is available, so you explain the concept while talking to the panel.
- Short class demo: You teach a few real students for 2–5 minutes.
Whatever the format, prepare one topic you can teach in 2 to 3 minutes and two backup topics. For the full interview flow, documents and timings, read our STI interview list 2026 guide and the STI interview questions and answers.
Free STI Demo Lesson Planner
Select your level and subject. The planner suggests three easy topics and gives you a minute-by-minute plan for the first one.
Subject-Wise STI Demo Lesson Topics
Choose topics that are short, visual and easy to explain on a board. Here are tried and tested options by level:
Primary level (classes 1–5)
| Subject | Easy demo topics |
|---|---|
| English | Nouns, opposites, simple present tense |
| Urdu | Word building from letters, ism and fail |
| Mathematics | Addition with carrying, place value, shapes |
| General Science | Parts of a plant, five senses, clean water |
| Islamiat | Kalimas, manners of the Holy Prophet (PBUH), cleanliness |
Elementary level (classes 6–8)
| Subject | Easy demo topics |
|---|---|
| English | Active and passive voice, parts of speech, application writing |
| Urdu | Mutradif and mutzad, darkhwast, muhavray |
| Mathematics | Fractions, ratio and proportion, area and perimeter |
| Science | Photosynthesis, states of matter, simple machines |
| Social Studies / Computer | Map reading, climate of Pakistan, input and output devices |
Secondary level (classes 9–10)
| Subject | Easy demo topics |
|---|---|
| English | Tenses on a timeline, direct and indirect speech, essay structure |
| Mathematics | Quadratic equations, Pythagoras theorem, simultaneous equations |
| Physics | Newton’s second law, Ohm’s law, speed and velocity |
| Chemistry | Atomic structure, ionic vs covalent bonds, pH scale |
| Biology | Human heart, cell organelles, digestive system |
| Computer Science | Flowcharts, binary numbers, networking basics |
The 3-Minute STI Demo Lesson Formula
This simple structure works for any subject and any level. Practise it three or four times before 29 October:
- Greet and hook (20 seconds): Greet the panel, write the topic and date on the board, and ask one question from daily life. Example for fractions: “If we cut a roti into four equal parts and eat one, how much did we eat?”
- Explain (1 minute): Teach the main idea in two or three small steps with one clear example.
- Involve (50 seconds): Ask the class or panel to try one example. Praise the answer.
- Check (30 seconds): Sum up in one sentence and ask one check question.
- Close (20 seconds): Give a tiny homework task and thank the panel.
For a longer written plan you can keep in your file, use our guide on how to prepare lesson plans as an STI teacher.
Classroom Skills the Panel Watches
- Clear, loud voice and simple language (Urdu or English according to the subject)
- Neat board work: topic, date and key points in big, straight writing
- Eye contact with the whole class, not only one person
- Asking questions instead of only lecturing
- Calm handling if you make a small mistake: correct it and move on
Mistakes That Cost Marks
- Picking a very long or difficult topic and running out of time
- Reading from notes or the book for the whole demo
- Turning your back to the class while writing for too long
- Using difficult English with primary-level children
- Arguing with the panel if they stop you early
Also bring all original documents, because the committee checks them before or after the interview. See the STI required documents list and our STI interview tips and dress code.
After the Interview
The STI final merit list is due on 31 October 2026 at 10:00 AM on school notice boards and the STI portal, and agreement letters are expected on 2 November 2026. Track both on our STI final merit list 2026 page. If you are also preparing for college-level internships, read our CTI stipend 2026-27 guide. For more school and teaching vacancies, visit JobsCentre.pk.
Frequently Asked Questions
Is there a demo lesson in the STI interview 2026?
Many school committees ask candidates to teach a short topic for 2 to 5 minutes. Prepare one main topic and two backups.
How many marks does the STI interview carry?
The STI interview carries up to 5 marks out of 100 in the merit.
Which topic is best for an STI demo lesson?
Choose a short, visual topic from the textbook of the level you applied for, such as nouns, fractions or photosynthesis.
Can I take notes into the STI demo?
A small cue card is fine, but do not read from it. Teach while facing the class.
When are STI interviews in 2026?
STI interviews for shortlisted candidates are on 29 and 30 October 2026 at the concerned schools.
When will the STI final merit list come?
The STI final merit list is due on 31 October 2026 at 10:00 AM.
Bottom line: Pick one simple topic, practise the 3-minute formula a few times, carry your documents and stay calm. A clear, confident demo can add valuable marks to your STI merit.