Tharindu S Thilakarathna Combined maths, Chemistry and Physics Lecturer
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Master Physics, Chemistry, and Mathematics for any curriculum — Cambridge | Edexcel | Local A/L | VCE | AQA — with a dedicated, results-focused teacher committed to your success.

Many students who perform well at O/L struggle at A/L.
The reason is simple: they did not find the right teacher who explains concepts clearly, builds confidence, and trains them with real exam techniques.
My goal is to ensure every student receives the correct guidance to reach A or A* standard, regardless of their starting point.

🔥 What You Will Get in My Classes
1. Complete syllabus coverage ahead of time

You will finish the syllabus early, giving more time for revision, past papers, and exam strategy.

2. Past paper–based learning

Each lesson ends with all related exam questions from Cambridge, Edexcel, Local A/L, VCE, and AQA — ensuring you understand the exact exam style.

3. Individual attention for all levels

Weak, average, or strong — I guide every student step-by-step until they become confident and mastery-level in the subject.

4. Clear explanations + exam techniques

Complex theories are explained simply. You learn concept clarity, problem-solving methods, and techniques examiners expect.

5. Structured, result-oriented teaching

My lessons are organized, exam-focused, and designed to build strong fundamentals and high-level application.

Why Students Achieve A / A*

Strong background in Physics

Experience teaching all major international and local syllabi

Friendly, patient, and motivating teaching style

Proven record of high-scoring students

Fast response rate and full academic support

If you are willing to study with dedication and consistency, I will take responsibility for your success.
Join my classes and transform your understanding, confidence, and exam performance.

PHYSICS NOTES (15)

1. Electric Field Strength
E = F ÷ q
Force per unit charge. Example: 12 N on 4 C → E = 3 N/C

2. SUVAT Quick Selection
Pick the formula that doesn’t contain the unknown variable.
Example: u = 10, v = 18, t = 4 → v = u + a × t ⇒ a = 2

3. Wave Speed
v = f × λ
Frequency vs period: f = 1 ÷ T

4. Momentum Conservation
m1 × u1 + m2 × u2 = m1 × v1 + m2 × v2
Used in elastic & inelastic collisions

5. SHM Condition
a = - ω² × x
Acceleration proportional & towards mean

6. Electric Potential
V = W ÷ q

7. Gravitational Field Strength
g = F ÷ m

8. Electrical Power
P = V × I = I² × R = V² ÷ R

9. Capacitor Energy
E = 0.5 × C × V²

10. Young’s Modulus
E = (F × L) ÷ (A × ΔL)

11. Internal Resistance
V = E - I × r

12. Magnetic Force
F = B × q × v × sinθ

13. Work Done by Gas
W = p × ΔV

14. Snell’s Law
sin i ÷ sin r = n

15. Efficiency
Efficiency = (Useful output ÷ Total input) × 100%

CHEMISTRY NOTES (15)

1. Moles & Molar Mass
n = mass ÷ Mr

2. Concentration
C = n ÷ V

3. Ideal Gas Law
P × V = n × R × T

4. Rate of Reaction
Rate = change in concentration ÷ time

5. Rate Law
Rate = k × [A]^m × [B]^n

6. Equilibrium Constant (Kc)
Kc = [products]^p ÷ [reactants]^r

7. Le Chatelier’s Principle
System shifts to oppose change in T, P, or concentration

8. Acid-Base pH
pH = -log[H+]

9. Strong vs Weak Acid
Strong → fully ionized, Weak → partially ionized

10. Oxidation Number Rules
Elemental = 0, O = -2, H = +1, sum = charge

11. Redox Reactions
Oxidation = loss of electrons, Reduction = gain

12. Solubility Product (Ksp)
Ksp = [A+]^m × [B-]^n

13. Electrochemistry (EMF)
E = E(cathode) - E(anode)

14. Collision Theory
More successful collisions → faster reaction

15. Enthalpy Change
ΔH = H(products) - H(reactants)

MATHEMATICS NOTES (15)

1. Quadratic Formula
x = (-b ± √(b² - 4 × a × c)) ÷ (2 × a)

2. Factor Theorem
If f(c) = 0 → (x - c) is a factor

3. Differentiation
d/dx x^n = n × x^(n-1)

4. Integration
∫ x^n dx = (x^(n+1)) ÷ (n+1) + C

5. Chain Rule
dy/dx = (dy/du) × (du/dx)

6. Trigonometric Identities
sin²x + cos²x = 1

7. Logarithms
log(ab) = log a + log b

8. Probability
P(E) = favourable outcomes ÷ total outcomes

9. Vectors
a · b = |a| × |b| × cosθ

10. Complex Numbers
i² = -1, z = a + b × i

11. Sequences
Arithmetic: an = a1 + (n-1)d
Geometric: an = a1 × r^(n-1)

12. Matrices
|a b|
|c d|⁻¹ = (1 ÷ (a×d - b×c)) × |d -b|
|-c a|

13. Differentiation of trig
d/dx sin x = cos x, d/dx cos x = -sin x

14. Area under curve
Area = ∫[a to b] f(x) dx

15. Binomial Theorem
(a + b)^n = Σ[k=0 to n] (n choose k) × a^(n-k) × b^k

Subjects

  • AP Calculus

  • AP Chemistry

  • Edexcel AS and A Level Mathematics

  • VCE Physics

  • SAT II Physics

  • VCE Math Method Unit 1 and Unit 2

  • Edexcel AS and A2 Level Physics

  • GCE A/L Chemistry

  • Cambridge A level Physics

  • Cambridge A Level Chemistry

  • GCE A/L Physics

  • Cambridge A Level Mathematics

  • AQA Physics A level

  • A/L Combined Maths

  • VCE Mathematical Methods 3 & 4

  • SAT (Scholastic Aptitude Test)

  • AQA (AS/A/A2) Level Chemistry

  • AP (Physics)

  • Edexcel A/level Chemistry

Experience

  • Owner (Jan, 2022–Present) at A3Academy
    A3Academy is a institute of higher education (AL).
  • Teacher (Jan, 2021–Jan, 2023) at Seventhday adventist high school, Kandana
    Teacher of A/L Combined maths and Physics
  • Demonstrator (Mar, 2019–Mar, 2020) at University of Kelaniya, Sri Lanka
    Lecturing and doing electronic practicals
  • Teacher/Tutor (Jan, 2016–Present) at A3Academy
    Hello Students! I'm Tharindu from Sri Lanaka; I've completed my Bachelor's degree special in physics at the University of Kelaniya.
    Currently, I'm working as a full time tuition teacher.

    I'm a dedicated and experienced Physics and Mathematics tutor and can teach students of all ages in English and Sinhala.
    I can do all kind of curriculums like edexcel and cambridge. I ensure friendly and interactive instructions encouraging students to learn passionately by sharing my knowledge and expertise. Mainly I focus on students' capabilities to derive the best learning outcome.

    My guidance will provide a clear understanding of the theories with real examples and improve students' problem-solving capabilities.

    Homework will be given to the students, and it's expected that they should complete and upload them before the next class so that the answers and methodology can be reviewed. Periodic tests also can be arranged.

    Contact me to discuss your goals, courses and study plans on Physics and Mathematics.

Education

  • Bsc Honours Special in Physics (Feb, 2015–Mar, 2019) from University of Kelaniya, Sri Lanka–scored GPA 3.56

Fee details

    රු3,000/hour (US$9.09/hour)

Courses offered

  • Physics – Mechanics

    • රු5000
    • Duration: 2 Hours
    • Delivery mode: Online
    • Group size: 5
    • Instruction language: English
    • Certificate provided: Yes
    Learn Mechanics from basics to advanced level. Topics include:

    Electric Field Strength (E = F ÷ q)

    SUVAT equations and problem-solving

    Momentum conservation (m1 × u1 + m2 × u2 = m1 × v1 + m2 × v2)

    SHM conditions (a = - ω² × x)

    Work done by gases (W = p × ΔV)

    Efficiency calculations

    This course prepares you for Cambridge, Edexcel, AQA, VCE, and Local A/L exams. Each lesson includes past paper solutions and examples.

  • Physics – Electricity & Waves

    • රු5000
    • Duration: 2 Hours
    • Delivery mode: Flexible as per the student
    • Group size: Individual
    • Instruction language: English
    • Certificate provided: Yes
    Master Electricity & Waves concepts including:

    Electric Potential (V = W ÷ q)

    Gravitational field strength (g = F ÷ m)

    Electrical power (P = V × I = I² × R = V² ÷ R)

    Capacitor energy (E = 0.5 × C × V²)

    Internal resistance (V = E - I × r)

    Magnetic force (F = B × q × v × sinθ)

    Wave speed (v = f × λ), Snell’s Law (sin i ÷ sin r = n)

    Includes exam-focused examples and problem-solving techniques.

  • Chemistry – Physical & Organic

    • රු5000
    • Duration: 2 Hours
    • Delivery mode: Flexible as per the student
    • Group size: Individual
    • Instruction language: English
    • Certificate provided: Yes
    This course covers Physical & Organic Chemistry for A/L students:

    Moles & Molar Mass (n = mass ÷ Mr)

    Concentration (C = n ÷ V)

    Ideal Gas Law (P × V = n × R × T)

    Rate of Reaction and Rate Law (Rate = k × [A]^m × [B]^n)

    Equilibrium Constant (Kc = [products]^p ÷ [reactants]^r)

    Acid-Base pH, Strong vs Weak acids

    Redox reactions and Electrochemistry (E = E(cathode) - E(anode))

    Collision theory and Enthalpy changes

  • Mathematics – Algebra & Calculus

    • රු5000
    • Duration: 2 Hours
    • Delivery mode: Flexible as per the student
    • Group size: Individual
    • Instruction language: English
    • Certificate provided: Yes
    Covering Algebra and Calculus for A/L and pre-university students:

    Quadratic formula, Factor theorem

    Differentiation and Integration

    Chain rule, Trigonometric Identities

    Probability, Vectors, Complex numbers

    Sequences: Arithmetic & Geometric

    Matrices, Area under curves, Binomial theorem

    Each lesson includes worked examples and problem-solving tips.

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