Secondary 4 Combined Science

Secondary 4 Combined Science

250 SGD / month

Prepare for the exam with Mind Stretcher’s Secondary 4 Combined Science programme. Have the key science concepts at your finger tips, and hone techniques to effectively tackle common question types.  

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Programme outline



Focused on gearing students up for the O-Level Science Examination at the end of the year


Students get access to trending O-Level questions, common student mistakes, and best ways to ace the O-Level Science Paper


Students practice key time management skills under exam-like conditions during our regular assessments 


Build upon existing knowledge from topics taught throughout Secondary School – topics will be covered in greater depth with intensive revision


New Science topics are introduced to students, such as Magnetism and Electromagnetism, Speed of Reactions, and Organic Chemistry


Physics: General Properties of Waves
  • Introduction to Wave Motion, and its Properties 
  • Wave Graphs
Physics: Electromagnetic Spectrum
  • Electromagnetic Spectrum
  • Properties and Applications of Electromagnetic Waves
Physics: Sound
  • Sound Production, Propagation and Transmission 
  • Echo Formation 
  • Properties of Sound - Pitch and Loudness
Physics: Static Electricity
  • Electric Charges
  • Electric Fields
Physics: Current of Electricity
  • Electric Current
  • Electromotive Force and Potential Difference
  • Resistance 
  • Resistivity
Physics: D.C. Circuits
  • Circuits and Components
  • Series Circuit, Parallel Circuit and Combination Circuits 
Physics: Practical Electricity
  • Electrical Power and Energy
  • Potential Dangers of Electricity and Safety Features 
  • Three-Pin Plug
Physics: Magnetism and Electromagnetism
  • Properties of Magnet
  • Magnetisation and Demagnetisation
  • Magnetic Fields
  • Applications of Magnets
  • Magnetic Field and Magnetic Force in Current Carrying Wire
  • Magnetic Force on a Charge
  • Turning Effect on a Current Carrying Coil
Chemistry: Air and the Environment
  • Composition of Air
  • Air Pollution 
  • Acid Rain
Chemistry: Redox Reaction
  • Oxidation and Reduction as Gain or Loss of Oxygen, Hydrogen or Electrons 
  • Oxidation and Reduction as Changes in Oxidation State
  • Oxidising and Reducing Agents 
Chemistry: Energy Changes
  • Exothermic and Endothermic Reactions 
Chemistry: Chemical Analysis
  • Tests for Gases
  • Tests for Aqueous Cations
  • Tests for Anions
Chemistry: Speed of Reaction
  • Speed of Reaction
  • Collision Theory
  • Factors Affecting Speed of Reaction: Particle Size, Concentration of Solution, Pressure of
  • Gases and Temperature
  • Measuring Speed of Reaction
  • Graphs
Chemistry: Fuels and Crude Oil
  • Fractional Distillation of Petroleum
  • Petroleum Fractions and their Uses
Chemistry: Alkanes and Alkenes
  • Homologous Series
  • Structure of Alkanes
  • Physical and Chemical Properties of Alkanes
  • Structure of Alkenes
  • Physical and Chemical Properties of Alkenes
  • Manufacture of Alkenes by Cracking
  • Addition Polymerisation
Chemistry: Alcohols and Carboxylic Acids
  • Structure of Alcohols
  • Physical and Chemical Properties of Alcohols
  • Production and Uses of Ethanol
  • Structure and Properties of Carboxylic Acids
  • Production of Ethanoic Acid

Lesson plans

Weekly Materials
  • Comprehensive Topical Notes

    Detailed topical notes and concept papers, accompanied by well-illustrated diagrams and worked examples, help solidify students' understanding.

  • Weekly Practice Papers

    Structured weekly practice papers that consist of basic to challenging questions to test mastery of topics, and develop higher-order thinking skills.

  • Hands-on Practicals

    Hands-on experiments and demonstrations to enhance students' understanding.

Homework Booster
  • Homework Booster

    Supplementary worksheets with teacher-guided solutions are provided weekly on Mind Stretcher's E-Study Buddy platform for additional self-practice.

  • Develop Right Answering Techniques

    Develop question analysis skills and answering techniques; use relevant science terminologies and keywords to tackle application-type questions.

Progress Tracking
  • Assessment Checkpoints

    Mind Stretcher's Checkpoints are run quarterly to simulate exam conditions, practice time management, and do papers similar to school assessments.

  • Student Progress Reports

    Mind Stretcher's Progress Reports analyse strengths, weaknesses and benchmark students within our cohort, which is larger than a few schools combined!

Exam Preparation
  • Error Analysis

    Analyse common student mistakes and concept misunderstandings, and learn how to avoid them.

  • Trending Questions

    Stay abreast of questions set in examinations; we monitor and analyse trending question types and incorporate them into our revision materials.

  • Revision Notes

    Comprehensive revision materials that summarises and reinforces important content for exam preparation.

Class schedules

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Course roadmap

Journey through our Secondary Science course

Sec 3 & Sec 4 Combined Science

While the examination requirements for Combined Sciences may appear less intensive than Pure Sciences, students will still need to develop a sound and robust understanding of core concepts to do well in this subject.     

Our Sec 3 and 4 Combined Science programme will help students to consolidate their learning in Physics and Chemistry, and strengthen their foundation. Topical papers and concept notes will be provided to help students internalise the key concepts and formula required for the examinations. Through our weekly practice papers, we will provide close guidance to students to help them build confidence in analysing the questions, and crafting good answers with the use of relevant key-words and terminologies.   

Students will have ample opportunities to practice common and trending O-Level questions, and also hone their time management skills under exam conditions during our regular assessment.

Our testimonials

What our students & parents say about us

Mrs Shum is a very dedicated teacher. She has given me detailed feedback to improve my writing and her lessons are very engaging. I really appreciate the personalised feedback which helps me identify areas I should work on more. She goes the extra mile to share interesting facts every lesson which has helped expand my general knowledge in so many ways. With Mrs Shum's tips and MS Worksheets explaining how to master various components, I'm able to answer questions with greater confidence. Lastly, Mrs Shum cares deeply about our emotional well-being, and she always reminds us that trying our best is more important than the results.

I would like to thank the Chinese Language teacher very much for her effort, concern and encouragement for my child! He is very happy to be in her class and has enjoyed the Chinese Language lessons very much. He has tried his very best in the PSLE examination last year 2022 and his Chinese has improved. The constant encouragement from his Chinese Language teacher makes a difference and goes a long way!  Thank you Mr Kuek and all the teachers very much who has taught him and shared during the online bootcamp and the webinars! We really appreciate the effort, time, love and understanding put into preparation of the examination booklets and materials and staying behind after the online lessons to answer the students' questions! Wishing all the teachers and staff a very Happy blessed year 2023 ahead! 

Parents of U Hian
Dear Mrs Shum, thank you so much for all the guidance and support you’ve given me since i joined ms. Since i joined at a pretty late stage, i didn’t expect myself to acquire so much valuable knowledge that allowed me to learn English from a whole new perspective, as well as to perceive life in many different aspects. Thank you for always being so generous in sharing with us your personal experiences that engaged us during class, and making English such a fun subject for us explore the wonders of it! Thank you for taking the extra mile to further support me in English Literature as well, it really has been very useful!! It has truly been an eye-opening experience learning from you and I will remember these lessons as part of the unforgettable memories of learning in this subject❤️🥰

Mrs Shum is a caring teacher who is concerned about her students and their well-being. She has helped me improve in my English and has always been very caring towards me. She stresses on our mental health and has encouraged us a lot. Her teaching is amazing and i love how she shares interesting facts related to the topic we were studying and she exposed us to the basics of general paper too. To add, Mrs Shum gives specific feedback on our work which allowed us to know what we can improve on. The MS comprehension worksheets were also of great help as they allow me to know how to answer certain questions in a straightforward manner. Mrs Shum marks quite strictly which also further prepared me well for the O-levels where the marking is usually more lenient. As a result, I learnt how to do better and could gauge where i stand. Mrs Shum also made me realise that i was better in personal recount essays which allowed me to do well in the O-levels. Overall, MS worksheets were of great help and useful with specific tips and strategies. Thank you so much.

Sevvel Selvam
Hi Ms Mavis, I would like to thank you for the teaching. Your lessons are engaging and I can always focus on it. I still remember vividly your patience when answering all my questions. Even though I have a lot of questions, you still answer them using your best effort which I appreciate very much. You are a great teacher 👍 Thank you very much and wish you a great year ahead !

Tao Weiqi
Dear Mr Alvin, Just want to text you to say "Thank you for all you have done for all the kids! Elvyn scored AL6 for his 2022 PSLE!“ A special mention to Teacher Meili, Teacher Audrey, Teacher Ryan and 丁老师。Not only were they never annoyed by his endless questions and constant requests for ways to improve himself, they guided him and encouraged him to do more and better. We are so blessed to have met all of you! I had introduced friends to send their kids to MS and will surely help to promote MS in the future too!

Mother of Elvyn Ee
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Why Mind Stretcher

A handcrafted, painstakingly developed system for mastery

Tailored and Differentiated
Tailored and Differentiated

Mind Stretcher Classes cater and stretch the potential of all students, regardless of whether they are high achievers, achievers or those students who are building their foundation.

Mastery as a priority
Mastery as a priority

Mind Stretcher’s proprietary Student Progress Tracking system  ("Checkpoint") identifies knowledge gaps, benchmarks students within our cohort and personalises action plans for improvement.

Holistic and Timely
Holistic and Timely

Beyond our weekly classes, Mind Stretcher runs targeted Edu-Workshops, Edu-Webinars & Bootcamps in a wide array of domains (academic & non-academic) to further guide and inspire our students in their education journey.


Mind Stretcher Online enables students to enjoy top-quality, live interactive classes from home. Furthermore, Mind Stretcher’s e-Study Buddy platform gives students access to studio-quality recording of classes recorded by our Master Teachers!

Affordable for everyone
Affordable for everyone

We believe that everyone should have access to quality education, regardless of background. Even as we deliver some of the most comprehensive and effective educational programmes in the market, we remain affordable as we try our best to help as many students as possible.

Proven A* Track Record
Proven A* Track Record

Since our genesis in 2002, we have been the Education Partner of choice for many students & their parents. More than 150,000 students (and counting) have walked through our doors. Our excellent track record over the years says it all.

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