Changes

====== Concept #2.Informal units of measurements ======

====== Concept #2.Informal units of measurements ======

The traditional ways of measurements are a type of measure which uses non-standard units such as hand spans, armlengths, footsteps or pattern blocks to measure length, area, etc.bNon-standard measurements are not always the same but vary from person to person.

The traditional ways of measurements are a type of measure which uses non-standard units such as hand spans, arm lengths, footsteps or pattern blocks to measure length, area, etc. Non-standard measurements are not always the same but vary from person to person.

===== Activities =====

===== Activities =====