Tibunan 是一个在线英语单词练习平台：按教材的年级、册和单元整理单词，提供「学习」「默写」「五秒挑战」三种练习模式，适合小学、初中和高中学生。购买访问密码后，在有效期内可以练习所选学段的全部单元。
Tibunan is an online English vocabulary practice platform. Word lists are organized by textbook grade, volume and unit, with three practice modes — Study, Dictation and a 5-Second Challenge — for primary, junior-high and senior-high school students. An access code unlocks every unit of the stage(s) you choose for its whole validity period.
| 小学阶段Primary school | $9.90 |
| 小初阶段Primary + junior high | $12.90 |
| 小初高全阶段All stages | $14.90 |
| 小学阶段Primary school | $89.00 |
| 小初阶段Primary + junior high | $119.00 |
| 小初高全阶段All stages | $139.00 |
适合学校、班级和家庭一次购买多张，每张密码单独使用。For schools, classes and families buying several codes at once; each code is used separately.
| 小学阶段Primary school · 每张 per code | $89.00 |
| 小初阶段Primary + junior high · 每张 per code | $119.00 |
| 小初高全阶段All stages · 每张 per code | $139.00 |
批量优惠 Volume discounts：