See picture with arrow pointing to it. Looks like dried dirt, maybe from storage.
Item Tag : Mathematics
Do You Even Know Math? The Ultimate Mental Math Game for Kids 8+, Teens and A…
Do You Even Know Math?. Any and all cards are sold as, is. They are not guarenteed to be in any sort of “GRADING” conditional grade unless otherwise listed. Contains the following Players 2-6. Standard Information.
Galton Board: Simple Edition
Features included in the Simple Edition Galton Board: Pascal’s Triangle Normal Distribution Binomial Theorem Row Numbers and Power of 11 Row Total and Power of 2 Fibonacci Numbers and The Golden Ratio Star of David Theorem Quincunx Pattern Diagonals and Triangular Numbers Hocket Stick Pattern Probability D.