A Things of Science unit from 1971 on the pendulum

Here is the booklet from the module (cleaned up):

Things of Science (1971) — Pendulum

There were some extra “things” in the kit made of die-cut chip-board. Here is a scan of those parts:

Things of Science (1971) — Pendulum (extra parts)

More Things of Science scanned here.

Things of Science (1971) Pendulum 11