Hair samples are interesting for students to observe, and they help make the concept of magnification more concrete for students.
(Hair samples; are; interesting for students to observe) (students; to observe; ) (they; help; make the concept of magnification more concrete for students) Context(they help,List([58, 67))):(they; help make; the concept of magnification more concrete for students)
they help,List([58, 67))
Hair samples students they they
are to observe help help make
interesting for students to observe
make the concept of magnification more concrete for students
the concept of magnification more concrete for students