Positive Learning Environment and its Effects on Learning...

As educators how do we  determine the right level of challenge/difficulty in each activity for our students?

I  believe Implementing a positive learning environment is closely tied to the subject matter being taught. Being a learner for most of my life, I know for a fact that many instructors neglect to include this theme in their everyday practice, given the time constraints involved or the curriculum they had to adhere to by the faculty for that matter. Therefore, I believe creating an interactive group wherein learning is received by much greater attention definitely creates a more positive learning environment. So in the criteria you noted, open-mindedness, along with listening and patience are some of the factors that I think contribute a great deal to a positive learning environment. 

When it comes to teaching children, however,  a positive learning environment consists of many things, and  to just note a few those include creating the attitude of respect towards children, providing guidance at all times when implementing a curriculum while creating and environment that allows them to explore new things while they are learning are among many factors that foster a positive learning environment.