I have been wanting to post some of our lapbooks for a while now and I am finally going to give it a shot.
My youngest did an addition lapbook that is basically flash cards made from index cards. On one side of the index card I wrote the addition problem and on the other side he wrote the answer. My eldest had the fun job of checking the answers! I like this lapbook idea because it makes flashcards an activity he can do himself. When I am busy with child #1 or #2, #3 can just sit on the couch and drill his addition facts with himself. My only stipulation is that I have to be able to hear him reading the facts aloud.
He decorated it himself!