今天和大家分享一个numeracy(数学)区角活动:explore volume (探索
you should see the airpods pro appear where the volume slider is
noise monitor is a professional sound meter for your iphon
amplitude: the height of a wave volume: how loud a note is.
卷动到最底部来查看 voice volume(声部音量)推子.
Tips:Do Not Provide
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