Table 4.

System usability and tool usefulness survey

n	Item	S1	S2	p
1	It was easy to study using the computer	3.21 (0.69)	3.38 (0.61)	0.04
2	The Study Mode was easy to use and understand	3.68 (0.52)	3.81 (0.40)	0.06
3	The division of content using topics and
	Flashcards was easy to understand	3.64 (0.53)	3.68 (0.47)	0.60
4	The division of Flashcards into Facts, Details,
	Images and Questions was easy to understand	3.60 (0.58)	3.77 (0.43)	0.04
5	The division of Flashcards into Facts, Details, Images
	and Questions helped to understand the key
	information to memorize	3.43 (0.58)	3.45 (0.72)	0.84
6	The information on the Flashcards was simple and clear	3.62 (0.49)	3.60 (0.54)	0.80
7	The Flashcards were presented in a logical sequence
	that facilitates learning	3.34 (0.67)	3.43 (0.65)	0.29
8	It was easy to find the Flashcards I wish to study using
	the Flashcard filters	3.38 (0.61)	3.38 (0.61)	1.00
9	The highlighter and the notes are useful features	3.66 (0.64)	3.72 (0.54)	0.41
10	The Questions on the Flashcards were easy to understand	3.34 (0.73)	3.45 (0.65)	0.37
11	The Questions were helpful to help me assess my knowledge about each subject	3.62 (0.61)	3.62 (0.53)	1.00
12	I could easily find the matching Answer to the Question in the Flashcard Component box	3.53 (0.58)	3.55 (0.48)	0.20
13	The order in which the Questions were presented did not affect my focus on answering	3.34 (0.90)	3.32 (0.69)	0.86
14	Without these tools I would not be able to obtain a similar acquired knowledge result	3.30 (0.81)	3.00 (0.83)	0.02

S1 and S2 refer to session 1 and session 2. The tasks performed were the same on both sessions. For columns S1 and S2 the values represent mean and standard deviation. Student agreement to each of the items was assessed using a 4-point likert scale: 1 - full disagreement; 2 - partial disagreement; 3 - partial agreement; 4 - full agreement. p values denote differences differences between each session mean.