Swapping your homeschooling materials with other parents is a great way to save money and for your own books and workbooks to get reused by someone that will appreciate them.
The easiest thing to do is to keep a list of any materials you have available for trade. When you make your list be sure to include title, author as well as the grade level and subjects covered in it. For example, some history curriculum might only cover history, while others also include math and language arts as well.
Keep your printed list in your purse or wallet, you never know when you might run into a homeschooling parent. You can also keep an electronic version, so you can email to anyone as well as participate in online swaps.
The most popular homeschool swapping website is simply known as www.theswap.com There are detailed instructions on how to participate in the swaps on their website.