Need training. The kangaroo math contest is the biggest math challenge for teenagers in the world. Pre-competition training is helpful to make targeted breakthroughs according to the important and difficult points of the competition, improve the academic level and impact the competition awards. Kangaroo Mathematical Thinking Challenge is held once a year in the participating countries, usually from March to April each year, and Level3 is April 2023 15. Up to now, more than 6 million students around the world have participated in the kangaroo contest. In the past two years, more than 30,000 students have come to compete for prizes in each competition.