For me, teacher is like a leader in my learning life. I always have the feeling that teacher are most common people who walk past the street, once they stand in the classroom, there is a shining light of a leadership around them. Though they are a little bit higher than us, they are still stand by stand among us.

 The most impressive sentence from the Siemens’s article is “One of the most persuasive factors is the shrinking half-life of knowledge. The ‘half-life of knowledge’ is the time span from when knowledge is gained to when it becomes obsolete. Half of what is known today was not known 10 years ago. The amount of knowledge in the world has doubled in the past 10 years and is doubling every 18 months according to the American Society of Training and Documentation (ASTD). To combat the shrinking half-life of knowledge, organizations have been forced to develop new methods of deploying instruction.” Siemens, G.  (2005, January).  Connectivism is a learning theory based on the acknowledge than knowledge exists in the world rather than in the heads of individuals. People learn through contact and interaction. In the digital age, people can learn from others via internet, which accelerates the speed of knowledge transmition as well as the obsoleteness of knowledge. After reading the article and watching the video from Siemens, I started to think about my formal life in China. The big change for my life is learning.

A learner today is like a communicator in a big net. We actually gain a lot of new information and knowledge not from textbook or our teacher, but from the network around us, both in real life and online. We check our email several times a day; we log on Social Network Site to see what's new, we use digital devices in class as teaching materials. When I reflect on how much I learned from the network, especially the online network, the answer is "ultimate". So why? In the video http://www.youtube.com/watch?v=grI_h88vs3g&feature=PlayList&p=3E43054A8703F57A&index=3 Retrieved January10, 2009.

 The Impact of Social Software on Learning Siemens mention " the knowledge in the technology field changes extremely quickly". If we don't involve in today's network, if we don't update our information every moment, we will be washed out. Besides, network provides us an easier way to enrich our knowledge and information. All you have to do is click. We have to adjust us into this new situation, because this is a revolution.


 In the article, Connectivism:A Learning Theory for the Digital Age, the author mentioned that "Capacity to know more is more critical than what is currently know". That's the typical principle of connectivism. That's also the standard and requirement for today's learner.http://www.youtube.com/watch?v=grI_h88vs3g&feature=PlayList&p=3E43054A8703F57A&index=3