Let’s think about multiplying and dividing decimal numbers Grade 5 (Japan)
From APEC HRDWG Wiki
This lesson in Japan was captured on video for an APEC Education Network (EDNET) project called Classroom Innovations through Lesson Study. The lesson is an example of using the Lesson Study process of professional development in the teaching of Mathematics. The lesson plan and full lesson video are available below. Video highlights with descriptions and analysis are available at the end of this page.
Contents |
Lesson Overview
This Grade 5 lesson was taught at Takehaya Elementary School Attached to Tokyo Gakugei University. Mr. Masahiro Seki taught this lesson to a class of 39 students. The lesson centers around the problem, "2 meters of wire weighs 24.8 grams. If you have 6 meters of the same wire, how much will it weigh?"
[High Performing Economy  ] [Demonstration Practice  ] (see Resource Types)
|
|
Lesson Video in Quicktime (50.4 MB) (Video Clips and Highlights Available below. Right-click and select "Save Target As" to download.) |
List of Episodes (Coming Soon) |
Video Clips and Highlights from the Lesson
The video clips are selected from the full List of Episodes (above). The Full Lesson Video may be downloaded for further study.
|
Description of Video Clip |
Video Links |
| Mr. Seki sets up the problem by showing students a wire. After helping students think about things that change as the length of wire changes, he pose today's problem. |
Segment 1. Introduction
|
|
Mr. Seki circulates around the classroom, asking questions and making suggestions. He also records students' responses on the seating chart he carries with him. After the individual problem solving time, Mr. Seki calls on some students to write down their solutions on the blackboard. |
Segment 2. Individual problem solving
|
|
The class discusses the solutions written by their classmates. They note that some strategies involve multiplication by 3 while others do not. Mr. Seki orchestrates the discussion as the class tries to articulate the reasons behind both approaches. |
Segment 3. Whole class discussion
|
| Mr. Seki summarizes the whole class discussion. He then asks the class to write a journal entry. |
Segment 4. Summarizing and consolidating students’ understanding
|
|
Final comment at the end of the post-lesson discussion by Prof. Toshiakira Fujii, Tokyo Gakugei University |
Final comment
|
The expansion of the topic on multiplication of decimal numbers Grade 5 – Teacher Masahiro Seki
