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Hi, I’m Sergii Nykonenko, a mathematics and physics educator creating original learning materials and educational videos.

The main focus of this channel is mathematics: engaging and non-routine problems, logic traps, different solution strategies, and the development of confident mathematical thinking.

You will also find videos about physics and STEM, including counterintuitive questions, visual models, simple experiments, and clear explanations of scientific ideas.

My goal is to help learners see the logic behind a solution, connect ideas, and apply their knowledge with confidence. I work with students following international curricula.

Logic reveals the path to the answer.

Videos

3:38

Reflection in Water: One Rule Draws the Whole Mirror Image | Perspective, No Words

22 views

10d ago

14:50

Interior in One-Point Perspective: Room, Furniture, Stair and Sunlight | Lesson 3

53 views

11d ago

17:02

How to Draw a City Street in One-Point Perspective | Step-by-Step Lesson

78 views

13d ago

1:30

Constructing a Pyramid Cross-Section | Step-by-Step Geometry

20 views

2w ago

7:36

How to Draw a Circle in Isometric Projection: Four-Centre Oval Step by Step

53 views

2w ago

4:28

4^(x^2) + 16 = 2^(x^2+x+2) + 2^(x^2-x+2) — the 16 is not a constant

6 views

2w ago

13:20

Inclined Lines in Perspective: Roof, Chimney and Steps (Step by Step)

145 views

2w ago

4:29

x^6 + 6 = 7*cbrt(7x^2 - 6) — a monster that says a number equals itself

13 views

2w ago

12:06

How to Draw a Corner House in Two-Point Perspective: 7 Architect's Constructions

38 views

2w ago

18:48

From Line to Façade | The Geometry of Architecture

28 views

2w ago

4:29

x^4 - 4x^3 + 5x^2 - 4x + 1 = 0 — read the coefficients backwards

13 views

2w ago

18:33

Constructing Cross-Sections of Cubes and Parallelepipeds | 12 Step-by-Step Examples

10 views

2w ago

11:57

Constructing Cross Sections of a Quadrilateral Pyramid | 8 Step-by-Step Examples

28 views

2w ago

7:17

x^3 - 3x = sqrt(2 - x) — three roots, and the heptagon behind them

23 views

2w ago

4:56

((sqrt5+1)/2)^x + ((sqrt5-1)/2)^x = 3 — golden ratio, whole-number answer

5 views

2w ago

5:00

cos^2 x + cos^2 2x + cos^2 3x + cos^2 4x = 2 — four squares become three cosines

12 views

3w ago

4:56

sqrt(x+1) + sqrt(x^2-x-5) = sqrt((x+2)(x^2-x-4)) — the answer is two cube roots

9 views

3w ago

4:33

sqrt(x) + sqrt(x^2-3) = sqrt((x+1)(x^2-2)) — an answer no radicals can write

7 views

3w ago

3:53

√(x²−1) + √(x²−3) = x√(x²−2) · No words. Just mathematics.

119 views

3w ago

6:28

Projectile Motion on an Inclined Plane | Range and Optimal Launch Angle

43 views

3w ago

5:29

Constructing a Cube Cross-Section Through Three Points | Step-by-Step Geometry

68 views

4w ago

6:41

The Four Bugs Problem | Physics Olympiad Lesson: Pursuit, Symmetry & Logarithmic Spiral

28 views

4w ago