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Course Level Date Clip# Line Interlocutor Content
- - - 1 35 UNK %xRES:These four problems, assigned as a group, are all applications. That is, they require students to apply procedures they previously learned in one context to a different context. On average in the Australian data set, 45% of the problems in a lesson were applications (Video Report, figure 5.6). These problems are begun in class, but students are expected to complete them for homework (see 44:51). Altogether about five minutes are spent working on them. This is similar to the estimated average time of four minutes per lesson spent on future homework problems in the Australian data set (Video Report, table 3.8).
- - - 1 11 UNK @Comment:This eighth grade mathematics lesson focuses on developing student understanding of congruent triangles. It is the second lesson in a twelve-lesson unit of work focused on congruent triangles. The lesson is 47 minutes in duration. The lesson was taped in a girls' school. There are 26 students in the class.This is one of four lessons that were chosen to represent the Australia data set. No individual lesson can capture all typical features of teaching in a country. However, the four public release lessons as a collection illustrate many typical features. The teachers filmed in this set of lessons volunteered to have their lessons included in the TIMSS 1999 Video Study Public Release collection. Their significant contribution to the field of education should be acknowledged with appropriate respect. This collection of lessons was videotaped for the specific purpose of education research. Therefore, the videotaping technique used was designed to minimize classroom disruption, and editing of the lessons was minimal. This lesson data, including the video footage, should be used for teacher professional development and education research purposes only.
- - - 1 36 SN what is s s s ?
- - - 1 37 S xxx.
- - - 1 38 T girls, just listen please.
- - - 1 39 T number one, it says are these triangles congruent, why.
- - - 1 40 T some people have been calling out.
- - - 1 41 T it's s s s because the three sides are equal.
- - - 1 42 T can you see that?
- - - 1 43 SN oh.
- - - 1 44 T and which and you've got to name the pairs of equal corresponding angles.
- - - 1 45 T so when it says are these triangles congruent and it says why just say s s s .
- - - 1 46 T so start activity seventeen point one if you've got any questions, I'll ask you.
- - - 1 47 T I'll also check your homework.
- - - 1 48 UNK %xTEA:I check the homework and record who has done it. I do this when they are doing individual work so that I can answer any problems that they have on an individual basis.
- - - 1 49 UNK %xNRC:Textbooks are used as the source of exercises in most Australian mathematics lessons. Generally, however, students are not expected to learn mathematics from their textbook.
- - - 1 50 SN you said that was due Friday.
- - - 1 51 T no, I said it was due today.
- - - 1 52 T your homework you had to do the investigation activity.
- - - 1 53 SN xxx.