A newsletter called Know Your Facts suggests ways for kids to learn math. Among them is the use of flash cards. But we like this method better: Here s how one student learned to recall 7x6=42. He took a piece of paper and wrote 7x6 on it and taped it to the toilet beside the handle. On another piece of paper he wrote 42 and taped that to the side of the toilet. Every time he flushed, he saw 7x6. He remembered it was the toilet bowl fact and could see the 42 in his mind. He never forgot that fact again. A more effective method, we think, would be to put the answer in the toilet bowl. That would be a fact that would stay with you, we feel.