0871-9187
0871-9187
S0871-91872021000200161
10.21814/rpe.21345
Portugal
30
12
2021
30
12
2021
34
2
161
182
[
2012
]
[
2017
22
1-18
]
[
2013
30
1-18
]
[
2009
13
2
2
355-79
]
[
2017
29
1
1
141-51
]
[
2017
]
[
2017
13881-90
]
[
1991
]
[
2017
]
[
Flipped Learning Network
2014
]
[
2006
]
[
2015
14
4
4
1-8
]
[
2015
]
[
1993
19
15-38
]
[
2007
167-80
]
[
2006
41
2
2
75-86
]
[
2002
41
4
4
212-8
]
[
2014
121
USA
9475
]
[
2017
12
4
4
1-22
]
[
2001
]
[
2013
77
9
9
1-8
]
[
2015
]
[
2015
II
15-33
]
[
2003
]
[
2020
18
2
2
568-89
]
[
2018
]
[
2018
]
[
2017
79-104
]
[
2012
15
171-93
]
[
2017
48
3
3
713-29
]
[
1998
1-23
]
[
UNESCO-BIE
2016
]
[
2019
28
1-18
]
[
1978
]
[
1975
]
[
2016
32
5
5
391-415
]
[
WEF
2018
]