These number tablets are made as samples for a school order but due to some rough surfaces, we weren't able to process the order. It has uneven surfaces but it does not affect play. 

How you can use this set?
- The little ones can count loose parts into the tray as a 1 to 1 correspondence activities
- They make good sensory play tools as well as filling trays
- Use nuts, seeds, wooden or woolen felt balls as counting parts 
- Use cards with + , - , =, for making adding and subtracting.
- Use wooden tweezers - tool for filling trays and development fine motor skills of the little hands.

Material
Linden wood.