Note
We will especially pick up the part of the third semester and the new grade.
Please try it out.
Junior high school 5 subjects monthly unlimited products
Middle school (mathematics) I Positive number Negative number 1-①
File List
| File | Size | Image quality | Replay Time | Streaming | Download |
|---|---|---|---|---|---|
mp4 |
135.44MB | 4,000kbps | 約4m | possible | impossible |
Product Information
Middle school 1st grade, positive and negative numbers.
Consider a negative number.