According to piaget ' s theory of cognitive development and constructivist learning theory , there are different levels for students " cognitive development 根據(jù)皮亞杰的認(rèn)知發(fā)展理論和建構(gòu)主義學(xué)習(xí)理論,學(xué)生的認(rèn)知發(fā)展具有階段性,其認(rèn)知的過程是一個(gè)建構(gòu)的過程。