14.1 Encounter the concept of measurement as a comparison of two items with similar attribute in question: use concrete objects as informal units of the attribute; recognize not to leave gaps between unit used.
14.2 Compare, describe and sort objects based on single measurement attribute: length, height, weight, capacity, time, temperature, turn.
14.3 Investigate attributes of 2-D and 3-D items using informal measures: perimeter: how many pencils are needed to go around the top of the student-desk; area: how many notepad pages will it take (without overlap) to cover the teacher's desk; volume
Infant 2
14.4 Use informal measures to establish generic concept for all measurements: for any attribute and unit of measure, how many such units fit into another instance of the same attribute.
14.5 Discover the advantages of using formal units.