Concept:Activities in elementary mathematics classrooms help students think strategically, build computational fluency, and serve as both motivation and assessment tools.
Explanation:Engaging in activities encourages children to explore different problem-solving methods, which develops strategic mathematical thinking.
Repeated practice through activities leads to computational fluency, as students become faster and more accurate with numbers.
Activities also motivate students to persist and practice, even when they face challenges, building confidence in their math abilities.
For teachers, activities provide a practical way to observe and assess students' understanding and skills in real time.
Therefore, the two key benefits are strategic thinking/computational fluency (statement a) and motivation/assessment (statement b).
Answer:Option B. (a) & (b)