A practice set for numbers and basic calculations.
The blocks have both Arabic number and braille, so people who can not read braille can also use them to practice themselves or with a blind person. There are two variations. One has a number cut out which can also be used to trace it using a fineliner or mechanical pencil. The other has blocks that you can count when practicing numbers for yourself. They can both be used just like this or you can stick magnetic tape on them so they can be used on a metal board, fridge, steel table, etc.
The set includes 0 to 9, / = : - + x and the braille indicator for numbers
Aside from this set there are sets for texts, punctuation marks and blanks for other languages. Check for these in my library.