Lapbooks are a great to add a bit of hands-on to your child's homeschool learning. They are also super to add to a portfolio, if you keep one. The lapbook allows your child to look back at things he learned, share what he learned with others, and it helps cement the learning since your child has ownership.
Kids can create lap books about any topic they choose. There are tons of sites on the Internet that explain how to begin lapbooking. They are sites that show and explain different styles of lap books, offer lapbook links, places to purchase lap book supplies, and even offer free lap book templates.
Here is a link on squidoo that is full of free and inexpensive lap books for third graders. Scroll down to "Literature" to find the links. You are sure to find lots of lap books your child will want to try.