## 3 Results
### Students' Opinions towards the 4 Teaching Tools--Univariate Analysis
The order shifts slightly in the other age groups--students aged 21-24, but also those over 25, rank classic oral presentations \begin{table}
\begin{tabular}{l c c c c} \hline \hline  & **RMT** & **RMP** & **RMF** & **RMO** \\  & **m**\(\pm\)**SD** & **m**\(\pm\)**SD** & **m**\(\pm\)**SD** & **m**\(\pm\)**SD** \\ \hline \multicolumn{5}{l}{Use the Internet mainly for entertainment:} \\ \multicolumn{5}{l}{The least important} & 4.07 \(\pm\) 0.799 & 3.47 \(\pm\) 0.688 & 3.62 \(\pm\) 0.779 & 3.42 \(\pm\) 0.819 \\ \multicolumn{5}{l}{Slightly important} & 4.00 \(\pm\) 0.969 & 3.38 \(\pm\) 0.865 & 3.70 \(\pm\) 0.845 & 3.36 \(\pm\) 0.965 \\ \multicolumn{5}{l}{Important} & 4.09 \(\pm\) 0.801 & 3.38 \(\pm\) 0.839 & 3.45 \(\pm\) 0.934 & 3.13 \(\pm\) 0.902 \\ \multicolumn{5}{l}{Most important} & 3.96 \(\pm\) 0.987 & 3.48 \(\pm\) 0.817 & 3.67 \(\pm\) 0.871 & 3.47 \(\pm\) 0.953 \\ \multicolumn{5}{l}{\(p\) = 0.873 \(\ddagger\)} & \(p\) = 0.691 \(\ddagger\) & \(p\) = 0.053 \(\ddagger\) & \(p\) = 0.009 \(\star\ddagger\) \\ \multicolumn{5}{l}{Use the Internet mainly for domestic facilities:} \\ \multicolumn{5}{l}{The least important} & 4.06 \(\pm\) 0.857 & 3.39 \(\pm\) 0.895 & 3.60 \(\pm\) 0.928 & 3.21 \(\pm\) 1.002 \\ \multicolumn{5}{l}{Slightly important} & 4.10 \(\pm\) 0.846 & 3.33 \(\pm\) 0.739 & 3.46 \(\pm\) 0.857 & 3.29 \(\pm\) 0.860 \\ \multicolumn{5}{l}{Important} & 3.86 \(\pm\) 1.026 & 3.53 \(\pm\) 0.725 & 3.68 \(\pm\) 0.777 & 3.52 \(\pm\) 0.813 \\ \multicolumn{5}{l}{Most important} & 3.78 \(\pm\) 1.181 & 3.75 \(\pm\) 0.794 & 3.98 \(\pm\) 0.795 & 3.79 \(\pm\) 0.840 \\ \multicolumn{5}{l}{\(p\) = 0.277 \(\ddagger\)} & \(p\) = 0.028 \(\star\ddagger\) & \(p\) = 0.009 \(\star\ddagger\) & \(p\) = 0.000 \(\star\ddagger\) \\ \hline \hline \end{tabular} \({}^{\ddagger}\) Mann–Whitney test; \({}^{\ddagger}\) Kruskal–Wallis test; \({}^{\star}\)\(p\) < 0.05 statistically significant; \({}^{\star\star}\)\(p\) < 0.01 statistically highly significant.  
\end{table} 
Table 2: _Cont._  
Figure 1: Opinion scores for the 4 teaching tools—average values. and educational videos first, followed by online documentary sources and PowerPoint presentations last. Unlike other studies, we refined our analysis by investigating other criteria too and providing additional results. Learners who use the Internet mainly for information agree almost equally with the benefits of all four blended learning tools. The average agreement score recorded for classic oral presentations is comparable to the similar scores observed for students who are not very interested in Internet information. The average agreement scores for PowerPoint presentations, educational videos and online documentary sources are significantly higher than the scores recorded for the other categories of students who are not very interested in Internet information. Students who use the Internet mainly for communication are most likely to agree only with the benefits of classic oral presentations and educational videos, the other two tools being only moderately acceptable. Classic oral presentations have the average agreement score significantly higher than the scores observed for students who rank Internet communication the second and third, but lower than that of students who rank communication last in the top preferences. The average agreement scores for PowerPoint presentations, educational videos and online documentary sources are not significantly different from the scores calculated for students who are not very interested in Internet communication services. Students who use the Internet mainly for entertainment largely agree with the benefits of classic oral presentations and educational videos, and to a lesser extent with the benefits of the other two tools. The average agreement score for online documentary sources is the only one significantly higher than that for students who rank Internet entertainment in the second and third places, being similar to the score observed for students who rank Internet entertainment the last.