Many different experiments are performed and repeated.
Theory-practice-theory take existing theory in education, apply to distance learning, develop new theory Practice-research-theory see what is happening in distance learning, submit to research, develop theory from results Theory-theory-research/practice build on an initial theory to develop a second theory, then apply and test it
develop a theory i think.
Marshal
Theory
Pythagoras
Janet Plowe did not develop the cell theory. The cell theory was formulated by Matthias Schleiden, Theodor Schwann, and Rudolf Virchow in the 19th century.
He first proposed this theory in 1943 in his paper, "A Theory of Human Motivation"
no Charles Darwin was the first scientist to develop the theory of evolution. Einstein was a math teacher. and was first put into 'special' classes
The red shift and the cosmic microwave background radiation was the evidence used to develop the big bang theory.
1760
1897
Hubb