导学视频
先看本周脉络，建立整体印象，再进入细节。
初中生物周周练
Free · On-device · v1.0
Weekly biology practice that sticks
Built for PEP Grade 7 Volume 1: guided intro videos, knowledge clips, concise notes, and check quizzes. One subject, a steady weekly rhythm.
每周怎么练
少而精的四步节奏，适合课后巩固与考前梳理。
知识短片
短片配中文讲解，把核心概念讲清楚。
图文精讲
重点与易混点对照，方便快速回看。
过关小测
即时检验掌握程度，巩固易错点。
本机进度
学习记录保存在手机本地，无需注册登录。
只做生物
不做大而全合集，把一门学科练扎实。
How each week works
A simple four-step rhythm for after-class review and exam prep.
Guided intro
Start with the week’s big picture before diving into details.
Knowledge clips
Short videos with Chinese narration that explain core ideas.
Concise notes
Key points and common mix-ups, easy to revisit.
Check quizzes
Quick checks to reinforce what you just learned.
On-device progress
Learning records stay on your phone — no account required.
Biology only
Focused depth in one subject instead of a bloated catalog.
适合谁
七年级学生、家长陪伴复习，以及需要按周节奏推进的课堂辅助场景。
Who it’s for
Grade 7 students, parents helping with review, and teachers who want a weekly practice rhythm.