[Solved] Elementary Educators Use Manipulatives

DQ Question: 

Students can sometimes become frustrated when asked to explain how they arrived at the correct answer of a math problem. How can you, as the educator, explain the importance of mathematical discourse and effectively encourage it in your future classroom? (ONE REFERENCE)

2. How can elementary educators use manipulatives in the classroom to explain math processes to very young students? Provide an example. (ONE REFERENC)