"Pioneers" of educational drama

Who are THREE "pioneers" of educational drama? Write one sentence about each of them - what did they bring to the field?
How does drama in education differ from just letting the children play make believe? Short paragraph.
What do we mean when we talk about a performance based theatre program vs using drama in your classroom as a process to deeper learning? What are
the differences? What are the similarities? One paragraph.
What are four of the basic elements of drama? Write a defining sentence about each. Use your own words. Do not just copy and paste the textbook.