brief Introduction of the content
Odyssey mathematical adventure 1: the world of numbers, the beginning of numbers, Arabic numerals and "0", divisor, fraction, least common multiple, power sum factor decomposition.
Odyssey Mathematical Adventure 2: Area and figure, figure area, pi and circle area, polygon, angle and parallel line, similar figure, three-dimensional figure and volume, congruent triangles.
Odyssey mathematical adventure 3: equations and unknowns, equations, ratios and ratios, decimals, functions, coordinates and charts, symmetrical figures, and the volume of a ball.
Odyssey Mathematical Adventures 4: From Set to Pythagorean Theorem, Set, Yin Number, Probability, Statistics, One Stroke, Regular Polyhedron, Pythagorean Theorem.