竞赛档按各地区小学数学竞赛的题型与难度组织,覆盖各地区主流竞赛考纲。The Contest track follows the question types and difficulty of elementary math competitions across regions, covering the syllabi of mainstream contests in each region.
· 免费体验课共 25 节(每级基础前 3 课 + 进阶第 1 课 + 竞赛第 1 课)永久免费;基础第 4 课起需订阅对应级别。The 25 free taster lessons (first 3 Basics + 1 Advanced + 1 Contest per level) are free forever; from Basics lesson 4 onward, a level subscription is required. · 单级订阅一次只解锁一个级别,不会自动解锁其它级别;需要多个级别时按级加购即可。One subscription unlocks one level only — other levels are never auto-unlocked. Add more levels separately if needed. · 人工答疑在「含人工答疑」档:赵老师本人回复。Teacher Q&A is included in the Q&A plan only: Mr. Zhao replies personally. · 订阅可随时停止,不提供永久买断;未成年人使用需监护人知情同意,付费由监护人完成,完整声明见 《服务声明与合规告知》→Subscriptions can be cancelled anytime; there is no lifetime buy-out. Minors must have a guardian's informed consent, and payment is completed by the guardian. See the Service Terms & Compliance Notice for the full statement.