Level 5: Coordinate units to constitute a scale.
5B
Generate and compose splits of units involving odd factors, such as 3 or 5.
"I made 12th’s like this. First I split the unit into 3; then I split it by 2 and then 2 again. That makes 12th’s."
"A meter is 100 times as long as a cm."
"A cm is 1100 times as long as a m."