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学生说明
1. Tap on 
2. Select the 
tool
3. Move the spotlight around to uncover the 5 hidden iPad rules
4. Click 
and tell what you discovered
教师备注（学生不可见）
Picture credit: https://wallpaperscraft.com/download/yoshi_super_mario_world_dinosaur_113360/2048x1152 Idea for lesson inspired by one of Kris Szajner's activities: https://app.seesaw.me/#/activities/library?profile=pub.person.cf7c0871-bba2-4758-b36b-f34c04185785
