1
2
3
4
5
6
7
8
9
10
11
12
Video
1)sucessful experiments
a. at the vacancy beside Hong Kong Federation of the Blind ( land which is rough and uneven in surface )
|
1
|
2
|
3
|
4
|
5
|
6
|
7
|
8
|
9
|
10
|
11
|
12
|
b. at school playground ( flat land )
|
1
|
2
|
3
|
4
|
5
|
6
|
7
|
2)Problems~water caming out from the water pipes and the foot-pump
|
1
|
2
|
|
1
|
2
|
3
|
|
1
|
2
|
3
|
3)Problem solving
|
1
|
2
|
3
|
