But if we make teaching and learning media multimedia. Children will hear both sounds correctly. See the pictures and the book, which is not difficult and it doesn't cost a lot. Children's learning is more efficient.
But if we prepare multimedia teaching materials. Children will hear the sound must have seen pictures and text with. Which is not difficult And the cost was not Learning of the child will be more powerful.
But if we prepare multimedia materials The child will hear the sounds right. See the pictures and words, which do not cost, easy. The learning ability of students have more efficiency.