Here’s how I introduce basic addition using a tens frame (two rows of five squares, making 10 in total). I start with a large mat and foam circles to show a story problem—like 3 apples plus 4 plums equals 7 snack items. Then each child gets their own magnetic tens frame (only two colors, red on one side and yellow on the other) so they can follow along. You can find these tens frame resources on my Amazon storefront. https://www.amazon.com/shop/preschoolvibes?ref_=cm_sw_r_cp_ud_aipsfshop_KMZK44T