In Ms. Taylor's third-grade class, students were having a discussion of how to compute 4times8. One student, Matt, explained, "I thought of 2times8, that's 16, then you just double it." The teacher asked several students to restate the idea and then asked the class, "Do you think Matt's way of multiplying by 4—by doubling then doubling again—works with problems other than 4times8?" When the response from students was quite mixed, she asked them to try some problems like this themselves before gathering again to discuss Matt's method.