The stage of creative thought during which the solution is critically evaluated is the stage

What percentage of American toddlers were toilet trained by 18 months in 1957?

a. 2% b. 42% c. 62% d. 92%

Vygotsky believed that that actual physical items that a child uses to learn (pencils, books, computers, etc) as well as the intellectual and conceptual framework that the child uses to learn (language, alphabet, number/math systems, religious systems, etc.) are called

a) memory aids. b) definition aids. c) cultural tools. d) learning aids.