Children can effectively learn math with friendly natural animals and/or worms. The comprehensive game of Space Tour, touring among various planets and the experience to fly over the surface of the earth, is provided. The players on the way encounter the hazards such as space dragons to block the way and/or falling meteorites, etc. The incorrect answers or too late answers will make it difficult to return back to the earth. The articles contained are such as multiples and common multiples, divisors and common divisors, the greatest common divisor, the least common multiples, add and subtract fractions with different denominators, multiplication and division of fractions, proportion and graph, geometry workshop (the volume of cube, rectangular prism)

