Please view the following video by Right-Clicking and Opening in New Window the following link: http://learner.org/vod/vod_window.html?pid=873 The video is titled Place Value Centers. After watching the video, post your responses to the following questions: 1. Why did the teacher have students work at centers? 2. How was measurement used to explore place value? 3. What is the value of using different manipulatives to explore the same concept?