PEDAGOGY CONTENT KNOWLEDGE (PCK)

PCK is about how to teach students based on pedagogy we have discussed before such as learning theories, approaches and strategies. its also consist of knowledge of science that are facts,concept,principle,theories etc.

if we refer to PCK, we can see that not all teachers can teach science. for example, english teacher maybe good in language but he or she not necessary good in conveying the knowledge of science to students. science or any subject should be teach by one who expert in that area.

science knowledge

1.facts: the simplest explaination about something that have been accepted by whole world.
for example:  a dog is a mammal

2. concepts: consists of many facts.
for example: plastics are polymers that can be shaped by applying heat or pressure. 

3. principle is a law.
for example: Newton's Third Law stated  For every action, there is an equal and opposite reaction. 

4. Theories: still can be argued and not necessarily true
for example: science theory of evolution

knowledge claims about alternative concept 

- happens when student have misconception in science. 

- even adult also have misconception

- sometimes the ideas are same with scientist before because they make conclusion based on observation.

- the teacher themselves not competent with the knowledge.

famous term arises from alternative concept is SPONTANEOUS GENERATION