Tens Frame Puzzle is an excellent resource to assist children to visualise the tens facts. By arranging the tiles in different ways children can see that ten can be made in different ways. Other numbers can also be investigated.
Ten dot tile measures 100 x 40mm.

Each set includes
9 Five-wise dot tiles from 1 to 9
9 Pair-wise dot tiles from 1 to 9
4 Ten frame dot tiles and 4 Five dot tiles
Teaching suggestions with ten frame chart BLM