science grade 4 first term lesson 1

4:16

2:25

20:11

20:33

20:17

11:11

10:14

20:09

20:09

14:24

12:23

15:47

5:52

20:03

20:19

20:10

11:19

6:41

4:42

20:41

6:28

9:28

7:51

1:52

9:11

21:48

4:54

6:27

2:24

4:17

1:16

18:05

18:34

17:46

16:29

20:51

16:33

15:40

18:46

11:46