https://www.mathplayground. com/puzzle_pics_subtraction_ facts_to_20.html
Saulius put together a mathematical puzzle
"If you want to put together a picture correctly, you can not make a mistake in calculating it. However, when there are only a few details missing, you needn't count, because you can see where the details of the puzzle are :)"
No hay comentarios:
Publicar un comentario