振动小课Vibration class
声音是什么What Is Sound
东西抖一抖，空气传一传，耳朵听一听。Things vibrate, air carries, ears hear.
第 1 站Stop 1
科学卡片Science Cards
点一下卡片翻过来。Pad 上点按就能翻。Tap a card to flip — tap works on Pad too.
第 2 站Stop 2
较轻 / 较大Softer / louder
哪些声音通常更轻？Which sounds are usually softer?
🤫 较轻Softer
📢 较大Louder
第 3 站Stop 3
保护耳朵Protect ears
点出护耳好办法。Tap ear-care ideas.
第 4 站Stop 4
点点小音符Tap the notes
点出现的音符。Tap appearing notes.