Math Group 4 (Lesson 5.1): Multiplication Bead Bar Layout/Decanomial Box of Beads 1st Presentation

4 hours ago

Time Codes
0:00 Introduction to the Bead Box
4:15 Direct and Indirect Purpose
7:10 Adapting the Material
9:50 Control of Error
10:58 Presentation (Lesson 1)
18:40 Following Exercises

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