Have you heard of FreeRice.com? This site let’s you play a vocabulary game..and for every word you get right, it donates rice to the United Nations to help end world hunger.
Free Rice adjusts the vocabulary it gives according to your level…so it’s appropriate for all ages. I’ll post a link on the SCS Links for Kids area, in case you’d like to have your students try it out. A word of caution though….it’s addictive. I found myself playing for quite awhile last night!