Original:  Problem-based learning: (PBL) A didactic concept of "active learning" in tertiary education, but is currently being adapted for use in K – 12 education. The defining characteristics of PBL are: learning is driven by messy, open-ended problems; students work in small collaborative groups; and "teachers" are not required, the process uses "facilitators" of learning. Accordingly, students are encouraged to take responsibility for their group and organise and direct the learning process with support from a tutor or instructor. Advocates of PBL claim it can be used to enhance content knowledge and foster the development of communication, problem-solving, and self-directed learning skill. Procedural knowledge: (or know-how) The knowledge of how to perform some task. Know-how is different from other kinds of knowledge such as propositional knowledge in that it can be directly applied to a task. Procedural knowledge about solving problems differs from propositional knowledge about problem solving. For example, in some legal systems, this knowledge or know-how has been considered the intellectual property of a company, and can be transferred when that company is purchased. Professional certification: (trade certification, or professional designation often called simply certification or qualification) A designation earned by a person to certify that he is qualified to perform a job. Certification indicates that the individual has a specific knowledge, skills, or abilities in the view of the certifying body. Professional certifications are awarded by professional bodies and corporations. The difference between licensure and certification is licensure is required by law, whereas certification is generally voluntary. Sometimes the word certification is used for licensure. Programmed instruction: A field first studied extensively by the behaviorist B. F. Skinner. It consists of teaching through small lessons, where each lesson must be mastered in order to go on to the next. Students work through the programmed material by themselves at their own speed. After each step, they are presented with a question to test their comprehension, then are immediately shown the correct answer or given additional information. Propositional knowledge: (or declarative knowledge) Knowledge that some proposition is either true or false. This distinguishes propositional knowledge from know-how or procedural knowledge, which is the knowledge of how to perform some task. This article discusses propositional knowledge from a variety of perspectives, including philosophy, science, and history. What is the difference between knowledge and beliefs? A belief is an internal thought or memory which exists in one's mind. Most people accept that for a belief to be knowledge it must be, at least, true and justified. The Gettier problem in philosophy is the question of whether there are any other requirements before a belief can be accepted as knowledge. Public education: Schooling provided for the general public by the government, whether national or local, and paid for by taxes, which leads to it often being called state education. Schools provided under such a system are called public schools in many countries, but in England the term "public school" refers to an elite of privately funded independent schools which had their origins in medieval schools funded by charity to provide education for the poor. Public education often involves the following: public funding; compulsory student attendance; state certification of teachers and curricula; and testing and national standards. Public school: The term has different (and in some cases contradictory) meanings due to regional differences. Pygmalion effect: (or Rosenthal effect) refers to situations in which students perform better than other students simply because they are expected to do so.
Revised:  Problem-based learning: (PBL) A didactic concept of "active learning" in tertiary education, but is currently being adapted for use in K – 
Edit intent: meaning-changed