What aspect of the author's theory does Professor Ladd's work attempt to verify?

We the people of the united states, in order to form a more perfect union, establish justice, insure domestic tranquility, provide for the common defence, promote the general welfare, and secure the blessings of liberty to ourselves and our posterity, do ordain and establish this constitution for the united states of america. according to the preamble which action represents an appropriate role for government

No interior das áreas ou disciplinas. todas as disciplinas que constituem o currículo de formaç? o e n? o apenas as disciplinas pedagógicas t? m sua dimens? o prática. é essa dimens? o prática que deve estar sendo permanentemente trabalhada tanto na perspectiva da sua aplicaç? o no mundo social e natural quanto na perspectiva da sua didática

Nathan has ordered a pizza that costs $20.00. he wants to give the delivery person a 20% tip. how much should the tip be?