Don't have Telegram yet? Try it now!
https://han-sr.com/archives/%ec%95%b1-%ed%99%9c%ec%9a%a9-%ea%b5%90%ec%9c%a15-2%ed%95%99%ea%b8%b0-1%ec%9a%b0%eb%a6%ac%eb%aa%b8-4%ec%b0%a8%ec%8b%9c-%ec%8b%ac%ec%9e%a5%ec%9d%b4-%ed%95%98%eb%8a%94%ec%9d%bc/
[앱 활용 교육]5-2학기-1.우리몸-4차시-심장이 하는일