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SENSE of Touch: What is the difference between sandpaper and the rough board?​

Sagot :

Answer:

Sand Paper Rankings. Grades K-12. To demonstrate  and the Touch Boards Materials Three rectangular boards: Rough and Smooth Board 1 One divided into two halves: the first half is polished and the second half is covered in sandpaper.

Explanation:

Touch Boards Materials Three rectangular boards: Rough and Smooth Board 1 One divided into two halves: the first half is polished and the second half is covered in sandpaper