Abstract  In order to apply micro lectures to college education successfully, construct new teaching and learning strategies and teaching model, this paper proposes characteristics of college microlecture based on the college education features and construct microlecture structure model based on the definitions by the experts and scholars。 Microlecture’s design philosophy and principles are also discussed here and production strategies and methods are introduced specifically while some companyingassessment indicators are set in this paper。 80677

Keywords:microlecture, college education, design

1。 Introduction 

Big data has become a focus of attention in the information technology field。 It is a hot word which already influences people’s life and naturally would shape and accelerate the development of educational informatization。 Big data could help users find out resources they need in the vast sea of data。 With the rapid spread of the mobile terminal such as intelligence mobile phone and tablet PC, etc, big data can also support mobile learning, blended learning and ubiquitous learning powerfully。 Microlecture is what exactly meets the requirement of mobile learning, blended learning and ubiquitous learning。

2。 The Definition of Microlecture 

Micro-lecture is initially developed from 60-second courseby Professor LeRoy A。 McGrew in University of Northern Iowa。 In 2008, David Penrose, the independent instructional designer of San Juan College in New Mexico US who proposes Microlecture, notes that microlecture has to be combined with the specific arrangement and discussion and the knowledge burst of microlecture would be of the same effect as the regular lectures of long hour。 He puts forward five steps in microlecture design, list the key concepts you are trying to convey in the 60-minute lecture, Write a 15 to 30 second introduction and conclusion, record these three elements using a microphone or web camera, design an assignment to follow the lecture that will direct students to readings or activities that allow them to explore the key concepts and upload the video and assignment to your course-management software。

Educause, an American educational informatization research institution which specifically studies the information technology in higher education, introduces itsdefinition of microlecture,claiming that microlecture is a short recorded audio or video presentation on a single, tightly defined topic。

In China, microlecture is firstly put forward by Tiesheng Hu, a teacher in Educational Information Network Center of Foshan Educational Bureau in Guangdong Province。 Its software has developed from 1。0 to 3。0 currently。 In the following part we will share prevalent definitions of domestic experts and scholars along with official document of Chinese Microlecture Contest。 

· Tiesheng Hu (Version 3。0): microlecture is the short form of micro video network lecture and its carrier is micro instructional video。 Microlecture refers to online video lecture resources which are designed and exploited to form a contextualization multimode learning style aiming at specific knowledge (key point, difficult point, question, and something that will appearin test) or teaching link (such as study activity, subject, experiment and task)

· Jianli Jiao notes that microlecture refers to teaching or studying video which is usually short and upload on line with the purpose of illustrating particular knowledge。

· Jiahou Li says microlecture is a short lecture within 10 minutes which focuses on one specific problem with clear teaching purpose and short content。 

· Bingjian Wu defines it as short video or animation online by both teachers and students with the purpose of sharing knowledge and skill which could reinforce studyingcontext and realize the semantic interconnection to satisfy inpidual learner difference and it could also beused as the learner-built and built-in resources in Wiki。