I have used a variety of word puzzles for many years with great success. Sometimes I use them as an additional assignment to reinforce classroom terminology, others to replace a low daily grade. Students don't always realize they are learning. I have had some who balk because they feel they don't have time for what they deem to be "silliness." There are times when I use search-a-words as fillers after a test, and the students look forward to them--occasionally I interject a holiday centered puzzle. All-in-all, the word puzzle idea is great, and I will use the ones you have provided. Thanks.