Assessment in Math and Science: What's the Point? Workshop 3. Is This Going To Count?: Embedded Assessment
This video clip shows groups of students using calculators to graph functions. The students are discussing whether the function xsin(x) goes through the origin. The teacher realizes that the students are having difficulty with composing the graphs of the functions x and sin x and makes a modification in her planned instruction by going back and making a "T-table" showing the values of xsin(x) for particular values of x.
Graphs of functions.