The student exchanges the GoPro's battery.
text: Exactly.
text: But open it from the bottom. You have to pull down the small gate. So you push that, yeah. Then push it down.
text: You push the very bottom, the small part. now you can press down.
text: Exactly.
text: Okay.
text: And now opens like the door.
text: You can pull on that.
text: Great.