Flash cards are a staple of grade school memories for most of us. I
personally remember learning multiplication with them. But kids today no
longer have to bother with making their own flash cards, or even buying them.
CueFlash.com is a virtual flash card web program from which you can create and
share flash cards. The site also has a public library with tons of useful flash
cards such as Spanish flash cards, the Periodic Table and of course -
multiplication. (Thanks, Jesse)