This investigation is designed to build on the knowledge that students are acquiring as they observe and record their findings.
(This investigation; is designed; to build on the knowledge) (This investigation; to build; L:on the knowledge) (the knowledge; are acquiring; T:as they observe and record their findings) (they; observe; ) (they; record; their findings)
This investigation This investigation the knowledge they they
is designed to build are acquiring observe record
to build on the knowledge
L:on the knowledge
T:as they observe and record their findings
their findings