From: Learning dialogs orchestrated with BookRoll: effects on engagement and learning in an undergraduate physics course
Cases
Sum of squares
df
Mean square
F
P
η2
Teaching phase
49.307
2
24.654
9.635
< .001
0.129
Performance level
0.014
1
0.005
0.942
0
Teaching Phase*Performance level
1.038
0.519
0.203
0.817
0.003