At station 1, students used the Pixy Stix segment to measure a length on the string, then they folded that length in half.
(they; folded; that length; T:in half; T:then) Context(they folded,List([90, 101))):(students; used; the Pixy Stix segment; to measure a length on the string; L:At station 1) Context(students used they folded,List([14, 101))):(students; used the Pixy Stix segment to measure; a length on the string)
they folded,List([90, 101)) students used they folded,List([14, 101))
they students students
folded used used the Pixy Stix segment to measure
that length T:in half T:then
the Pixy Stix segment to measure a length on the string L:At station 1
a length on the string