砖
=
专
+
石
:
The scientist (专) and Julian Giant Squid (zhu) are standing next to a rock (石) in front of the anthill (an1). They are quietly thinking for a long time, until the scientist has an idea and tells Julian Giant Squid what to do in order to create bricks (砖) out of the rock (石).
工
=
二
+
丨
:
Mnemonic symbol: a steel beam, since 工 looks like the cross section of a steel beam. In front of the engine ((e)ng1), Gitta Giraffe (gu) is doing some hard work: She's stacking a capacitor (二) on a dinosaur bone (丨) on a capacitor (二). She's not very successful, but then she gets the idea to use steel beams (工) as support.