Only The Most Fun Way To Learn Measurements
Rockstar's favourite learning activity during 3-way conference recently was
biting the heads and tails off earthworms measuring gummy snakes.
(At risk of gender bias, a thing about Snips and Snails and Puppy Dogs' Tails comes to mind <roll eyes>)
He demonstrated how to do a finger-width estimate of the length of these gross-looking things gummy worms in centimetres, and then check the actual length with the rulers.
All in the interests of learning, you see...
ps: Someone left a headless gummy behind, much to Rockstar's added amusement...