A primary school teacher can encourage children to become effective problem solvers by

Encouraging children to make intuitive guesses followed by brainstorming fosters problem-solving skills by promoting flexible thinking, hypothesis generation, and collaborative reasoning. This approach values the process over the product and treats errors as learning opportunities. Material rewards undermine intrinsic motivation, emphasis on only procedural knowledge limits conceptual understanding, and penalizing incorrect answers discourages risk-taking essential for problem-solving.