Dominoes are good for children at various stages of development though the dominoes shown in the photos would not be suitable for older children and adults who have a thorough grasp of the game. They would consider it to be cheating when symbols can be seen on both sides of the dominoes. You can leave the backs blank and opt for numbers or spots on the other side.
These large-scale tactile dominoes are probably most suitable for young children. They can be used for matching spots and, at a later stage, reinforcing how written numbers relate to counting. The colours help with matching the numbers.
The dominoes shown were knitted with Aran yarn but any yarn could be used. They have a stiff foam filling so they are very lightweight, almost indestructible, and can be washed. Diagrams are included for adding numbers and spots.