..............page:76-78,72
Levels of Instructional Strategy
m. david merrill 1 sheng qunli 2 hua yuwen2 (1.professor center for instructional technology and outreach brigham young university hawaii professor emeritus utah state university; 2.education college of zhejiang university 310028)
..............page:18-22
Problem Situations in Web-based Course and the Creation Analysis
gao zhiying1 liu xin2 xue zhimei3 (1.jinzhong university teacher s college; jinzhong shanxi 030600; 2.department of education technology; anyang normal university; anyang henan 455000; 3.education department; hebei normal university of science and technology; qinhuangdao hebei 066004)
..............page:47-50
..............page:35-36,50
..............page:28-30,34