students choose a variable to investigate and then they begin designing experiments using a learned technique.
(students; choose; a variable to investigate) (they; begin; designing experiments; T:then) Context(they begin,List([51, 61))):(they; begin designing; experiments using a learned technique)
they begin,List([51, 61))
students they they
choose begin begin designing
a variable to investigate
designing experiments T:then
experiments using a learned technique