3. Sınıf Fen Bilimleri

https://www.youtube.com/watch?v=HSX4Kvv7Vh4
https://www.youtube.com/watch?v=8RunGwgqVXM&list=PL3oxhzRdQr1kSALsinwhicfGQc4Zf2rli&index=18
https://www.youtube.com/watch?v=4g_gXsPUX-A&list=PL3oxhzRdQr1kSALsinwhicfGQc4Zf2rli&index=16
https://www.youtube.com/watch?v=CZXcUK5n_H4