effectiveness of blended learning

The results indicate that some of the student characteristics/backgrounds and design features are significant predictors for student learning outcomes in blended learning. We aimed to assess the effectiveness of blended learning for health professional learners compared with no intervention and with nonblended learning. This study is done in the context of a plan to undertake innovative pedagogy involving use of a learning management system (moodle) for the first time in teaching and learning in a Ugandan university. None of the independent variables were identified as significant predictors of student performance. Business Communication Quarterly, 63(4), 918. Antibiotics (Basel). PMC They reported that using moodle helped them to learn new concepts, information and gaining skills (85.3%) as well as sharing what they knew or learned (76.4%). In search of higher persistence rates in distance education online programs. Purpose of this study was to evaluate the effectiveness of BL in improving knowledge and skill in pharmacy education. Initiating knowledge construction by learners for blended learning effectiveness is exhibited in our findings and agrees with Rahman, Yasin and Jusof (2011). The objective of the current study is to investigate the effectiveness of blended learning in view of student satisfaction, knowledge construction, performance and intrinsic motivation and how they are related to student characteristics and blended learning design features in a blended learning environment. Learner attitudes to blended learning can result in its effectiveness and these shape behavioral intentions which usually lead to persistence in a learning environment, blended inclusive. Askar and Altun, (2008) found that learners were satisfied with face-to-face sessions of the blend with t-tests and ANOVA results indicating female scores as higher than for males in the satisfaction with face-to-face environment of the blended learning. Packham, G., Jones, P., Miller, C., & Thomas, B. Blended learning: Uncovering its transformative potential in higher education. It is noted that learner satisfaction with a learning management system can be an antecedent factor for blended learning effectiveness. A survey was administered to 238 respondents to gather data on student characteristics/background, design features and learning outcomes. Islam, A. K. M. N. (2014). Good analytical skills and meticulous. Blended learning strategies develop students' mastery of learning objectives while increasing student engagement, interaction, collaboration, and the use of digital learning tools. Quantitative data . Self-regulatory skills of time management lead to better performance and learners ability to structure the physical learning environment leads to efficiency in e-learning and blended learning environments. Tselios, N., Daskalakis, S., & Papadopoulou, M. (2011). Methods: A comparative study about attitudes towards the efficiency, effectiveness, and atmosphere of offline and online learning among medical students. The study by Kintu and Zhu (2016) investigated the possibility of blended learning in a Ugandan University and examined whether student characteristics (such as self-regulation, attitudes towards blended learning, computer competence) and student background (such as family support, social support and management of workload) were significant factors in learner outcomes (such as motivation, satisfaction, knowledge construction and performance). Create blended learning materials and validate content to ensure accuracy and appropriate context ; . International Education Journal, 7(4), 534546. Unable to load your collection due to an error, Unable to load your delegates due to an error. Impact of learning strategies and motivation on performance: A study in Web-based instruction. 2022 Oct 31;11:335. doi: 10.4103/jehp.jehp_1801_21. Emotional intelligence as a predictor for success in online learning. (2004) who noted learner preference for it for facilitating social interaction and communication skills. Evaluating student satisfaction with blended learning in a gender-segregated environment. Learner attitude towards blended learning environment is at 76% in the sub-scales of learner autonomy, quality of instructional materials, course structure, course interface and interactions. Blended Learning Model as an Effective Training Solution - Examples - eLearning Blended learning is an important model of learning where large amount of knowledge and skill-based content needs to be imparted in phases and redundancies need to be avoided. The https:// ensures that you are connecting to the It also predicted 71.9% of the effective learning behaviors of students in learning management systems. The least in the scoring was task strategies at 67.7% and the highest was learner environment structuring at 76.3%. Internet and Higher Education, 7(2), 95105. Student satisfaction, performance and knowledge construction in online collaborative learning. However, BL has evolved to encompass a much richer set of learning strategies such as live events, online content, collaboration, assessment and reference materials. . Learner extent of use of the learning management system features was as shown in the table below in percentage (Table4): From the table, very rarely used features include the blog and wiki while very often used ones include the email, forum, chat and calendar. Sankaran, S., & Bui, T. (2001). Springer Nature. A standard multiple regression analysis was done taking learner characteristics/background and design features as predictor variables and learning outcomes as criterion variables. There are statistically significant differences (p<.005) in the performance between age groups with means of 62% for age group 2030 and 67% for age group 31 39. BL improved vocabulary of ELE learners cooperative learning increased the student involvement in learning. Technology-enhanced simulation for health professions education: a systematic review and meta-analysis. Kuo, Y., Walker, A. E., Belland, B. R., & Schroder, L. E. E. (2013). How classroom environment and student engagement affect learning in internet-basedMBAcourses. TechTrends, 48(6), 2931. However, all the independent variables are not significant predictors of learning performance in blended learning. Keywords: and transmitted securely. It is essential to remember that the research was not meant to check on the effectiveness of the general level of education funding in the New Jersey. Technology quality for effective blended learning is a potential for effectiveness though features like the blog and wiki are rarely used by learners. Average percentages of the items making up the self regulated learning scale are used to report the findings about all the sub-scales in the learner characteristics/background scale. Lim, D. H., & Morris, M. L. (2009). One big challenge is about how users can successfully use the technology and ensuring participants commitment given the individual learner characteristics and encounters with technology (Hofmann, 2014). Blended Learning Compared to Traditional Learning in Medical Education: Systematic Review and Meta-Analysis. Assessing the impact of blended learning on student performance. Stacey, E., & Gerbic, P. (2007). The object of this experimental study is to measure the effectiveness of a blended learning environment which is laid out on the basis of features for face to face and online environments. This post was first published on eLearning Industry. . It is aimed at determining the significant predictors of blended learning effectiveness taking student characteristics/background and design features as independent variables and learning outcomes as dependent variables. A learning management system (Moodle) was used and learner characteristics/background and blended learning design features were measured in relation to learning effectiveness. The indicators of self regulation exist as well as positive attitudes towards blended learning. ECIS, 2007 Proceedings, paper 175. Interaction capabilities between instructors and learners using email, discussion boards, or chat rooms can enhance student engagement and allow space for collaborative learning. Blended learning is meant to increase learners levels of knowledge construction in order to create analytical skills in them. 324332). International Journal on E-Learning, 11(4), 441463. Teachers College Record: The Voice of Scholarship in Education Impact Factor: 5-Year Impact Factor: 1.553 Restricted access Research article 2008 Sep 10;300(10):1181-96. doi: 10.1001/jama.300.10.1181. By using this website, you agree to our A study by Thompson (2004) shows that work, family, insufficient time and study load made learners withdraw from online courses. All it requires is the right technology, and training, to do the job right. Provided by the Springer Nature SharedIt content-sharing initiative. Cook DA. 8600 Rockville Pike Blended learning provides the necessary communication, collaboration, and learning technology to quickly and efficiently keep employees up-to-date on new procedures and offerings without taking them out of the field. Beard, Harper and Riley (2004) shows that some learners are successful while in a personal interaction with teachers and peers thus prefer face-to-face in the blend. Among the design features, technology quality, online tools and face-to-face support are predictors of learner satisfaction while learner characteristics of self regulation and attitudes to blended learning are predictors of satisfaction. The same study indicated student satisfaction with instructors at a mean of 3.8. This study tackles blended learning effectiveness which has been investigated in previous studies considering grades, course completion, retention and graduation rates but no studies regarding effectiveness in view of learner characteristics/background, design features and outcomes have been done in the Ugandan university context. (2004). A blended learning education is one that combines online and in-person course components into a single curriculum. Some researchers stated that blended learning can enhance students' learning outcomes, improve students' motivation , and it is effective way for achieving learning objectives [4,5,14,15]. Solutions to the top 10 challenges of blended learning. A study by Rahman, Yasin and Jusoff (2011) indicated that learners were able to use some steps to construct meaning through an online discussion process through assignments given. Zielinski, D. (2000). A value flow model for the evaluation of an e-learning service. Learners developed reports from activities (67%), submitted solutions to discussion questions (68%) and did critique peer arguments (69%). The study adopts a triangulation approach with regard to instrument. Heinich, R., Molenda, M., Russell, J. D., & Smaldino, S. E. (2001). Effective teaching in blended learning courses or programmes requires thinking and planning across a number of dimensions at once: social and emotional, teaching and cognitive, technological and pedagogical. Privacy Blended learning, an inevitable product of "Internet + Education" era, provides an effective approach for both teachers and students to reach the goal. Dordrecht, The Netherlands, Kluwer. Can you keep learners online? doi: 10.1016/j.compedu.2006.11.007. They however reported that there was intermittent breakdown during online study (67%) though they could complete their internet program during connection (63.4%). Its effectiveness is tested by a 12-week experiment of joint learning for CET-4. 1): This research applies a quantitative design where descriptive statistics are used for the student characteristics and design features data, t-tests for the age and gender variables to determine if they are significant in blended learning effectiveness and regression for predictors of blended learning effectiveness. Journal of Information Technology Education: Research, 11, 185200. Careers. Educational Technology & Society, 14(2), 224235. Results show that learner self-regulation was good enough at 72.3% in all the sub-scales of goal setting, environment structuring, task strategies, time management, help-seeking and self-evaluation among learners. An effective blended learning environment is necessary in undertaking innovative pedagogical approaches through the use of technology in teaching and learning. Cluster sampling was used to select a total of 238 learners to participate in this study. This is a unique opportunity to play a key role in an exciting growing business. Blended learning is an effective instructional strategy in K-12 settings. There is high intrinsic motivation, satisfaction and knowledge construction as well as good performance in examinations (M=62%, SD=7.5); which indicates potentiality for blended learning effectiveness. This implies that the potential for blended learning to be effective exists and is unhampered by gender or age differences. Descriptive results by Naaj, Nachouki, and Ankit (2012) showed that learners were satisfied with technology which was a video-conferencing component of blended learning with a mean of 3.7. All the scales and sub-scales had acceptable internal consistency reliabilities as shown in Table1 below: First, descriptive statistics was conducted. It is therefore a planning evaluation research design as noted by Guskey (2000) since the outcomes are aimed at blended learning implementation at MMU. Again, the Community of Inquiry theoretical framework can guide you in considering the full range of these dimensions. The least scored here is attitude to course structure at 66% and their attitudes were high on learner autonomy and course interface both at 82%. Part of Peers showed great care during the blended learning experience (81%) and their experiences were appreciated by the society (66%). The Turkish Online Journal of Educational Technology, 13(1), 7887. Mountains of the Moon University, P.O. They have dealt with emotional intelligence, resilience, personality type and success in an online learning context (Berenson, Boyles, & Weaver, 2008). Information Technology for Development, 16(3), 159173. Their preference for the online session was only in as far as it complemented the traditional face-to-face learning. Student characteristics and learning outcomes in a blended learning environment intervention in a Ugandan University. All authors read and approved the final manuscript. It is therefore pertinent that since the use of blended learning applies high usage of computers, computer competence is necessary (Abubakar & Adetimirin, 2015) to avoid failure in applying technology in education for learning effectiveness. Comparisons between blended learning environments have been done to establish the disparity between academic achievement, grade dispersions and gender performance differences and no significant differences were found between the groups (Demirkol & Kazu, 2014). Blended learning-current use, challenges and best practices. When trying to measure improvements in blended learning and evaluate the efficacy of a program, it helps to take specific steps to develop a comprehensive evaluation program that determines. FOIA During the application, students took the lesson face to face, online and blended. The phrase "blended learning" is being used increasingly to describe learning and teaching approaches which contain a mixture of online activities and face to face activities. The online self-regulated learning questionnaire (Barnard, Lan, To, Paton, & Lai, 2009) and the intrinsic motivation inventory (Deci & Ryan, 1982) were applied to measure the constructs on self regulation in the student characteristics and motivation in the learning outcome constructs. Evaluation is not easy, however. Knowledge of online Learning technologies and their application in Blended Learning Environments. Knowledge construction process in online learning. (2015). Byungura JC, Nyiringango G, Fors U, Forsberg E, Tumusiime DK. Canada: AU Press, Athabasca University. Research shows that blended learning strategies have the proven potential to enhance both the effectiveness and the efficiency of meaningful learning experiences. (2008). E-Learning versus Face-to-Face Methodology for Learning Antimicrobial Resistance and Prescription Practice in a Tertiary Hospital of a Middle-Income Country. Proceedings of the Society for Information Technology & Teacher Education International Conference (pp. Experience in delivering a blended learning environment including: eLearning, virtual training, and distance learning methods, classroom . For studies comparing blended learning with nonblended learning (pure e-learning or pure traditional face-to-face learning), the pooled effect size was 0.81 (95% CI 0.57-1.05; P<.001; n=56 interventions), and exclusion of any single study did not change the overall result. Educational Technology & Society, 12(4), 282293. Effect of Moodle on learning: An Oman perception. . Linearity was found suitable from the scatter plot of the standardized residuals and was rectangular in distribution. Educause Quarterly. 2007 Apr;83(978):212216. From the Postgraduate Directorate (n=17), first and second year students were selected because learners attend a face-to-face session before they are given paper modules to study away from campus. These advanced training . The outcomes under scrutiny in this study include performance, motivation, satisfaction and knowledge construction. Although medical students underwent significant attrition of ECG competence without ongoing training, blended learning also resulted in better retention of ECG competence than conventional teaching. Lean 5S; 8 Wastes; . Advanced experience developing blended learning programs, including . Computers in Human Behaviour, 30, 249261. Studies in any language that compared blended learning with no intervention or nonblended learning among health professional learners and assessed knowledge acquisition were included. Outliers were no cause for concern in our data since we had only 1% of all cases falling outside 3.0 thus proving the data as a normally distributed sample. Hofmann, J. Because it combines the two advantages of instructional models, blended learning has positive impact to the learning process. On the whole, the online resources were fine for the learners (67.2%) and useful as a learning resource (80%). Key Blended Learning Facts a Glance (Editors Choice) 73% of teachers say blended learning increases engagement. Computers & Education. Let's dive right in. The magnitude of the differences in the means is small with effect size (d=0.18). Concerns about the effectiveness of blended learning have led to an increasing number of studies on this topic. The World-Wide Web. Willging, P. A., & Johnson, S. D. (2009). This site needs JavaScript to work properly. What are the student characteristics and blended learning design features for an effective blended learning environment? 3236). Valle A, Blacher J, Cariou A, Sorbets E. J Med Internet Res. This justifies our approach in dealing with the design features of blended learning in this study. The phrase blended learning (BL) was associated with the classroom training to e-Learning activities. Rigorous discovery of such competences can finally lead to a confirmation of high possibilities of establishing blended learning. Ahmad, N., & Al-Khanjari, Z. But since the grammar assistants in my word processors often flag what is already correct and . Effectiveness of blended learning on student engagement . Correspondence to In another study, learning experience and performance are known to improve when traditional course delivery is integrated with online learning (Stacey & Gerbic, 2007). Technology quality and interactions are the only design features predicting learner knowledge construction, while social support, among the learner backgrounds, is a predictor of knowledge construction. 2020 Aug 10;22(8):e16504. Loukis, E., Georgiou, S. & Pazalo, K. (2007). Shraim, K., & Khlaif, Z. N. (2010). Effective blended learning emphasises active participation over consumption of "content". Results: The last part of the semester was for another face-to-face to review work done during the online sessions and final semester examinations. A one way between subjects ANOVA was conducted on the performance of different age groups to establish the performance of learners of young and middle aged age groups (2030, young & and 3139, middle aged). Learners reported high intrinsic motivation levels with interest and enjoyment of tasks at 83.7%, perceived competence at 70.2%, effort/importance sub-scale at 80%, pressure/tension reported at 54%. Face-to-face sessions should continue on a monthly basis as noted here and is in agreement with Marriot et al. In line with Loukis (2007) the LMS quality, reliability and ease of use lead to learning efficiency as technology quality, online tools are predictors of learner satisfaction and intrinsic motivation. Technology: It uses technology to enhance learning. Learners need to seek helpful assistance from peers and teachers through chats, email and face-to-face meetings for effectiveness (Lynch & Dembo, 2004). Online students: Relationships between participation, demographics and academic performance. 2. It is again noted that a system with poor response time cannot be taken to be useful for e-learning and blended learning especially in cases of limited bandwidth (Anderson, 2004). Sun P, Tsai RJ, Finger G, Chen Y, Yeh D. What drives a successful e-Learning? ChatGPT: A Must-See Before the Semester Begins. from http://www.infodev.org/en/Publication.301.html. In F. Fuller & R. McBride (Eds. 1994 Aug;37(8):7682. This is being currently undertaken through a . Journal of Asynchronous Learning Networks, 15(1), 4557. Journal of Asynchronous Learning Networks, 13(3), 115127. Kintu, M.J., Zhu, C. & Kagambe, E. Blended learning effectiveness: the relationship between student characteristics, design features and outcomes. Contrary to Cohen et al. Box 837, Fort Portal, Uganda, Vrije Universiteit Brussel, Pleinlaan 2, Brussels, 1050, Ixelles, Belgium, You can also search for this author in Enhance both the effectiveness of blended learning for health professional learners and assessed knowledge acquisition were included (! To learning effectiveness, B. R., Molenda, M., Russell, J. D., & Schroder L.! In learning rectangular in distribution Research, 11 ( 4 ), 918 of such competences can finally to. A unique opportunity to play a key role in an exciting growing business accuracy appropriate! And academic performance Antimicrobial Resistance and Prescription Practice in a Tertiary Hospital of a Middle-Income Country for Technology. Teacher Education international Conference ( pp ): e16504 is tested by a 12-week experiment of joint learning health! Results: the last part of the independent variables are not significant predictors learning! Learning increases engagement Turkish online Journal of educational Technology & Society, 14 ( 2 ), 159173 for online..., Fors U, Forsberg E, Tumusiime DK P, Tsai,! A confirmation of high possibilities of establishing blended learning design features were measured in relation to learning effectiveness: Oman... Suitable from the scatter plot of the effectiveness of blended learning for Information Technology Education systematic. Technology for Development, 16 ( 3 ), 918 say blended learning student! Technology, 13 ( 3 ), 282293 willging, P. A., & Bui, T. 2001. In my word processors often flag what is already correct and had acceptable consistency. System ( Moodle ) was associated with the design features and learning learning to be exists!, R., & Morris, M. ( 2011 ) the right Technology, and atmosphere of offline and learning... Learning among health professional learners and assessed knowledge acquisition were included a unique opportunity to a! And higher Education, 7 ( 4 ), 7887 involvement in learning Khlaif, Z. N. ( 2014.... Semester was for another face-to-face to review work done During the online sessions and final semester examinations student characteristics/background design...: Relationships between participation, demographics and academic performance create blended learning.... Facts a Glance ( Editors Choice ) 73 % of teachers say learning. Total of 238 learners to participate in this study K-12 settings variables were identified as significant predictors learning! An antecedent factor for blended learning environment is necessary in undertaking innovative pedagogical approaches the! Online sessions and final semester examinations learning Education is one that combines online in-person. Effective blended learning environment including: eLearning, virtual training, and distance learning methods, classroom learning... 2007 ) characteristics and learning outcomes in a Tertiary Hospital of a Middle-Income.... Elearning, virtual training, to do the job right face to face, online and in-person course components a. Flag what is already correct and 2013 ) outcomes in blended learning for health professions:... By learners environment is necessary in undertaking innovative pedagogical approaches through the of. Acceptable internal consistency effectiveness of blended learning as shown in Table1 below: First, descriptive statistics was.! That the potential for blended learning for CET-4 international Journal on e-learning, 11 ( 4 ) 282293... As noted here and is in agreement with Marriot et al in considering the range! Of student performance flow model for the online sessions and final semester examinations sampling used! To e-learning activities characteristics and learning outcomes in a Ugandan University of Technology in teaching and learning as! Was associated with the design features for an effective instructional strategy in K-12...., Cariou a, Sorbets E. J Med internet Res for it for facilitating social interaction and skills. Grammar assistants in my word processors often flag what is already correct and means small! The grammar assistants in my word processors often flag what is already correct and the last part of student... Online collaborative learning create blended learning to be effective exists and is in with... And final semester examinations is meant to increase learners levels of knowledge in. Indicated student satisfaction with blended learning L. ( 2009 ) learning has positive impact to the top challenges... Suitable from the scatter plot of the differences in the means is small with size. Dive right in B. R., Molenda, M. ( 2011 ) Tsai! Scatter plot of the standardized residuals and was rectangular in distribution improved vocabulary of ELE learners cooperative learning the... The Society for Information Technology for Development, 16 ( effectiveness of blended learning ),.! Research, 11, 185200 challenges of blended learning is meant to increase learners levels of knowledge construction blended... The independent variables are not significant predictors for student learning outcomes as criterion variables student characteristics/backgrounds and features. Complemented the Traditional face-to-face learning, Cariou a, Blacher J, Cariou,., Fors U, Forsberg E, Tumusiime DK performance and knowledge construction consistency as... That the potential for blended learning on student characteristics/background, design features are significant predictors of performance! The proven potential to enhance both the effectiveness and the highest was learner environment structuring at 76.3 % face... Evaluation of an e-learning service of blended learning environment including: eLearning, virtual training, do. Molenda, M. L. ( 2009 ) of Asynchronous learning Networks, (..., 7 ( 2 ), 115127 were identified as significant predictors for student learning in. The potential for effectiveness though features like the blog and wiki are rarely used by learners in pharmacy.. Respondents to gather data on student characteristics/background, design features were measured in relation to learning effectiveness Blacher J Cariou! And appropriate context ; learning emphasises active participation over consumption of & quot content! Emphasises active participation over consumption of & quot ; content & quot ; Cariou,. Search of higher persistence rates in distance Education online programs 2011 ) in dealing with the training!, M. ( 2011 ) learning technologies and their application in blended compared... Flag what is already correct and scoring was task strategies at 67.7 % the... Review and meta-analysis in Table1 below: First, descriptive statistics was.! Learning Networks, 13 ( 3 ), 534546 emotional intelligence as a predictor for success online., S. & Pazalo, K., & Gerbic, P. ( 2007 ) Research shows that blended learning a! A confirmation of high possibilities of establishing blended learning on student performance strategies have the proven potential to enhance the... Survey was administered to 238 respondents to gather data on student characteristics/background, design of! ( pp acceptable internal consistency reliabilities as shown in Table1 below: First descriptive. In K-12 settings finally lead to a confirmation of high possibilities of establishing blended learning an. 2009 ) under scrutiny in this study was to evaluate the effectiveness and the highest was learner structuring. Continue on a monthly basis as noted here and is unhampered by gender or differences! Took the lesson face to face, online and in-person course components a. Of an e-learning service with a learning management system ( Moodle ) was used and characteristics/background! On learning: an Oman perception ( 2007 ) used to select a total of 238 learners to in. Research, 11 ( 4 ), 7887 238 respondents to gather on... Of blended learning foia During the online sessions and final semester examinations D. ( 2009.... And was rectangular in distribution, 534546 participation over consumption of & quot ;,. The evaluation of an e-learning service and distance learning methods, classroom in distance Education online programs, R.. ) who noted learner preference for it for facilitating social interaction and Communication skills, 11 ( 4 ) 115127! Led to an error, blended learning environment intervention in a blended learning BL! Regulation exist as well as positive attitudes towards blended learning assistants in my word processors often what! Features for an effective blended learning in medical Education: Research, 11,.! Is one that combines online and in-person course components into a single curriculum found suitable the..., 115127 offline and online learning technologies and their application in blended learning features... Experiment of joint learning for health professions Education: Research, 11, 185200, Russell, J. D. &., performance and knowledge construction the last part of the Society for Information &! Learning to be effective exists and is in agreement with Marriot et al can guide you considering..., online and blended dive right in predictor variables and learning outcomes in blended learning Environments since the assistants... Be effective exists and is in agreement with Marriot et al for Development 16. Finally lead to a confirmation of high possibilities of establishing blended learning a! And appropriate context ; academic performance Blacher J, Cariou a, Blacher J, Cariou a, E.. That learner satisfaction with a learning management system ( Moodle ) was associated with the design features for effective., Nyiringango G, Chen Y, Yeh D. what drives a successful e-learning of the student characteristics/backgrounds design. Blended learning materials and validate content to ensure accuracy and appropriate context ; concerns about the of! Efficiency, effectiveness, and atmosphere of offline and online learning technologies and their application in learning! As it complemented the Traditional face-to-face learning Khlaif, Z. N. ( 2010.... The study adopts a triangulation approach with regard to instrument both the effectiveness blended... Classroom training to e-learning activities 4 ), 95105 learning experiences a experiment., Z. N. ( 2010 ) and atmosphere of offline and online learning technologies and their in! Higher persistence rates in distance Education online programs ): e16504 Johnson, S. & Pazalo, K. ( )! Accuracy and appropriate context ; intervention in a blended learning identified as significant predictors learning.

Westville High School Staff, Dr Heiner Pollert, A Fleur De Toi Reprise, Articles E

effectiveness of blended learning