• The learning process is entertaining and exciting
  • The solved tasks turn into coordinates
  • The chance to follow your progress
  • Along with your schoolmates and friends, go on an adventure, searching for hideouts
Contact info
  • E-mail:

62.1. Lighting and safety.

Write the answer!

Making an experiment, the distance between book and bulb is being changed and the lighting changes. Which diagram is correct where lighting depends on the distance between the two?
Light and colours
Lighting and safety.

Solve tasks to find hidden Geo point coordinates

  1. Chemistry: Substances multiplicity.
  2. Chemistry: Substances with constant composition. Chemical formula.
  3. Chemistry: Waters physical properties. Solution (part of weight).
  4. Physics: Heat process diagram.
  5. Chemistry: Substance consistent invariables. Chemical formulas.
  6. Algebra: Arithmetic square root
  7. Physics: Interaction, strength and safety.
  8. Geometry: Rectangular (S = ab, a, b - edges) and area of the square (S=a^2 , a - edge) formula.
  9. Geometry: Polygon angle sum, convex or concaved quadrangle, polygon diagonale.
  10. Chemistry: Gas volume calculations.