After reading the thoughtful discussion in TwitterChat, I believe that the openness and sharing within K-12 educational context shall be practiced because it has various advantages. Some of its advantages are the following: (1) it amplifies the voice of the learners, (2) it promotes collaboration, and lastly (3) it encourages inclusivity. 

When teachers practice openness and sharing, the students no longer become a passive receiver of knowledge. This is for the reason that, in this educational context, the teachers no longer spoon feed information to their students. But rather, the learners are taken as independent learners so they are given the freedom to research the information they think they need. In addition to this, when teachers practice openness and sharing, the students will be encouraged to collaborate. After researching information, learners need to share their ideas with others and hear the perspective of other learners. This way, the learners will be able to verify and synthesize the information that they have gathered. Lastly, with openness and sharing, educators will be able to accommodate various types of learners. This is because openness and sharing makes learning accessible. In other words, for as long as the learners are interested to join in the discussion, he/she can share his/her comments or opinions. 

To conclude, educators should practice openness and sharing in K-12 context because it amplifies the voice of the learners, it promotes collaboration, and it encourages inclusivity. Currently, educators have various means to make openness and sharing possible. This means that educators cannot find an excuse as to why they should not practice openness and sharing in K-12 educational context.