To help students become good problem solvers, which of the following practices should a teacher emphasize?

→ According to Vygotsky, what plays the most crucial role in 'Cognitive Development'? → According to Vygotsky, what is the role of 'Cultural Tools' in 'Cognitive Development'? → According to Kohlberg, what is the thinking process involved in making judgments about questions of right and wrong called? → According to Piaget, in which stage of cognitive development does a child begin to think logically about concrete objects and events? → Under Howard Gardner's 'Theory of Multiple Intelligences', a crucial and central concept—'Naturalistic Intelligence'—is defined as the specific cognitive ability that enables an individual to recognize, classify, and successfully interact with various forms of nature, flora, fauna, ecosystems, and subtle environmental distinctions. Regarding its true psychological implications and the scientific facilitation of students' environmental sensitivity, experiential field study, and ecological thinking in classroom teaching, which of the following psychological statements is the most authentic and scientifically valid? → According to Jean Piaget, at which stage does a child begin to engage in 'abstract thinking'?