Correct option is A
Mathematical discussion in the classroom can help children develop their mathematical understanding in a number of ways. By talking about math, children can:
• Clarify their thinking: When children talk about their math ideas, they can help themselves to clarify their own thinking. This is because the process of verbalizing their thoughts can help them to identify any gaps in their understanding.
• Learn from others: When children hear other children's explanations of math concepts, they can learn new ways of thinking about those concepts. This can be especially helpful for children who are struggling with a particular concept.
• Develop their problem-solving skills: When children talk about how they solved a math problem, they can learn from each other's strategies. This can help them to develop their own problem-solving skills.
• Build confidence: When children are able to explain their math thinking to others, they can build their confidence in their math abilities. This confidence can then help them to tackle more challenging math problems.