The students then make a device that they use to measure the shadow cast from a meter long stick at noon on a day close to the vernal equinox.
(The students; make; a device that they use to measure the shadow cast from a meter long stick at noon on a day close to the vernal equinox; T:then) (a device; use; to measure the shadow cast from a meter long stick at noon on a day close to the vernal equinox) Context(a device use,List([23, 45))):(they; to measure; the shadow cast from a meter long stick)
a device use,List([23, 45))
The students a device they
make use to measure
a device that they use to measure the shadow cast from a meter long stick at noon on a day close to the vernal equinox T:then
to measure the shadow cast from a meter long stick at noon on a day close to the vernal equinox
the shadow cast from a meter long stick