They have printable dominoes, but since we have a set of double six dominoes, I’m just using the addition template for the ones we have.
I printed it off on cardstock, then slipped it inside a glossy sheet protector. I gave my daughter a dry erase marker to use with it, and she wrote out the math equation and solved for the answer by counting the total numbers of dots. The dry erase marker simply wipes right off.
As she gets proficient, I’m going to replace the double six set with a double 12 set of dominoes. When she’s comfortable with addition, I’m going to modify the sheet and use it for subtraction.