以下是关于【方差】的公开课/优质课视频，一共41个
42:3416-
45:00131 -
37:1555 -
43:5197 -
25:1436 -
20:2191 -
20:19121 -
40:14119 -
40:40131 -
07:34129 -
37:1662 -
35:01124 -
08:5011 -
47:0452 -
43:5455 -
44:4034 -
42:12124 -
45:1242 -
42:4642 -
42:1876 -
43:1946 -
31:4328 -
17:1115 -
11:11106 -
13:4577 -
46:1538 -
51:4389 -
33:4676 -
41:5448 -
07:16118 -
40:07114 -
40:4518 -
43:31139 -
45:338 -
45:5191 -
45:53101 -
40:1274 -
36:3980 -
43:3469 -
45:3059 -
42:189