Adult teaching-learning principles 
Foundations
Experience
Diversity
Awareness
Focusing on the importance of what is taught
Understanding the students' learning differences
Learning experience in the classroom
Experience brought by the students to the classroom
Being aware of teaching moments triggered by the students
Encouragement
Being positive
Being encouraging
By motivating and being patient
By emphasizing the students' achievements
By avoiding criticism
Accepting that not all the techniques apply for everyone
Classroom and materials
Using visual aids and engaging materials
Keeping a pleasant atmosphere
Knowing the students' interests and necessities
Caring about what the students have to say
Teaching skills
Showing confidence
Listening to the students
Using body language
Being patience (specially at students' responses)
Respect timing
Being prepared
Connecting learning with the students' daily life
Connected to students' daily life
Making connections to teaching
Orientating the students' learning
Methodologies
Problem-based learning
Project- based learning
Implies the real world
Takes more time
Implies a final product
Implies a solution
Takes short time
Implies both real and fictional situations
Valuing unique strengths, needs and interests
Being respectful
By not comparing students
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Understanding the students' ability to choose
Being aware of the students' experiences
For any possible change or crisis
Accepting the students' self-directing influence