Answer: Seriation
Step-by-step explanation:
Seriation is defined as technique through which element, items or objects are classified and place in a particular order based on the subject.Items ca be classified on the basis of size, shape, capacity, color etc.It is considered as the stage of development that occurs step by step usually in children.
According to the question,ordering of things are such as placement of sticks according to their particular length is the example of serration.