- funny maths
- a clock(2)
- a math trick-1
- a math trick-2
- a math trick-3
- tux walks up and down...
- a proof of pythagorean theorem
- double reflection
- reflections-2
- reflections...
- Fibonacci spiral
- quadrilaterals
- approximating pi
- reflections-4
- pythagorean spiral
- reflections-3
- Garfield's proof for pythagorean theorem
- solving quadratic inequalities
- a function...
- angles in a circle...
- a math trick-2...
- modern teacher
- five roses
- Vieta's formulas
- an identity...
- an identity-2
- find the angle
- the flower of life
- the seed of life
- Koch snowflake
- Kaleidoscope
- regular star polygons
- a clock
- approximating pi...
- a math trick...
- right triangle trigonometry
- the golden ratio and aphrodite's phi
- devil's curves-1
- devil's curves-2
- trifolium-1
- right triangle paradox
- square-rectangle paradox
- isosceles triangle paradox
- a butterfly curve-1
- devil's curves-3
- tangram puzzle-1
- fraction division: a ÷ b (partitive)
- a math trick-31
- a wheel of fortune
- ferris wheel
- wheel of fortune-1
- a wheel of fortune-1
- parallels or not?
- rolling two dice-1
- rolling a dice
- string art
