Abstract

The third part of the series is "Shapes (Figures)". One is "plane figures". Among them, it is created with an emphasis on "the ability to extract and 'see' only the lines that are important to you from a complex figure" and "the ability to imagine and visualize unwritten lines (auxiliary lines)" as skills that will lead to the future. In the process of solving it, "logical ability" and "summarization ability" are very important. The other is "three-dimensional figures". In essence, it tests spatial recognition ability, the ability to move a solid object in three dimensions in your mind, and imagine the shape from behind and the cut surface.

Author’s Information

Founded in 2005 by leading members of the Mathematics Olympiad with the aim of improving the mathematical abilities of children around the world, the school has gained a reputation around the country for teaching games and puzzles to elementary school children, helping them develop an interest in math while having fun.