Yes the teacher is to impart learning. Things are change rapidly so just like new subjects and technologies are introduced for students learning same will be for teaching and teachers then teachings learning process will be effective in terms of imparting.

Latest training and teaching skills to teach and impart

The fact that your blog post "The lesson you never got taught in school: How to learn!" has been read hundreds of thousands of times leads to a paradigm that learning how to learn is more important than how to learn.

If 55 and 65 percent of self-control differences between individuals are linked to genes, the teachers effort will have little effect on learning or learnability. What are your recommendations for the teacher?

Sir, Teachers impart learning where learn ability is a personal capability of individual to comprehend idea, concept, software etc.

Learnability is a continous process where teachers (esp. in early age-school and college) should develop the process. With second one, learning will be easier and effective (Personal viewpoint).

For example,

Sustainability education is incorporated in higher education but actual requirement is in basic schooling (Practice).

Similarly, Moral education or ethics are thought in books but application is missing. It reflects the poor learnability about ethical values, morality and sustainability results unsustainable practices.

Thus, learnability is continuous process where learning is feeder path.

From Bagvad Gita, Teacher (krishna), Arjun (Student), Gita updesh (learning) and fight with Kaurav (Learnability).

Learning never stops. If you stop learning you stop leading. In this era where things are changing at the rate of speed it is important to impart skills that enhance employability of the learner; therefore learnability is important

You hade raised a pertinent issue; what happens to learning or learnability if the class size increases from 40 to 400.