Unit studies (a/k/a integrated studies or multidisciplinary studies) incorporate a variety of subjects into a single topic or theme. Choosing a topic that interests your child creates an immediate motivation to learn. Unit studies can take anywhere from days to weeks to complete. They are generally not structured, so you'll want to make sure your child doesn't get bored with the topic before the unit study is finished. On the plus side, they are easy to adapt to any child's interests and abilities, so unit studies are perfect for families with children at different educational levels. There are many free unit studies available online, as well as for purchase, or you can easily create your own. Below are some websites offering unit studies, some of which are completely 
free!
Unit Study Resources
- About.com Unit Study Directory
Beverly Hernandez, About.com Guide, has put together a Unit Study Directory--an index of free online unit studies, sortable by letter, by subject, or by grade level. - Around the World: Learning About Our Globe One Country at a Time
This full-color e-book, featuring nine different countries from around the world, is chock full of fascinating information, beautiful photos and fun activities to help you and your children learn more about our amazing world and the people living on it. - Design-A-Study Books and Resources
Look here for Kathryn Stout's Design-A-Study home schooling and educators guides and resources. Natural Speller and Movies As Literature are the current featured homeschooling products. - EasyFunSchool Unit Studies
Free unit studies and themed collections to be used with the units or as stand alone activities or supplements for holidays. - Free Homeschooling Unit Studies from The Home School Mom
Find free homeschooling unit studies conveniently grouped into grade levels from TheHomesSchoolMom.com - Fun Christian Homeschooling Unit Studies
Free Printable Christian Unit Studies for Homeschooling. - Homeschool Learning Network
Free Unit Studies from the Homeschool Learning Network. - Intellego Unit Studies
Intellego Unit Studies unites technology, learning style theory, and multisensory activities to help children reach their true academic potential. They pprovide comprehensive and complete K-8 curriculum in social studies and science, as well as multidisciplinary unit studies for electives and enrichment in the areas of science, history, art, music, civics, cultures, and popular interest. - Learning Adventures
Learning Adventures is a home-based publishing company that provides unit study curriculum guides and accessories for homeschooling families. Their unit studies feature 180 days of daily lesson plans in each volume, a chronological history-based study for grades 4 through 8, all subjects (Bible, language arts/literacy, social studies, science and fine arts) but math, a real, living books approach to learning, and experiments, recipes, hands-on activities, and projects that make learning fun and meaningful. - Literature Based Unit Studies
At Homeschool Share, unit studies are carefully grouped into age levels. - Notebooking Packets by Balancing Everything
Look here for awesome Notebooking pages on our Solar System and Africa. You will also find free downloadable companion packets. Great for incorporating into your unit studies! - Online Units by Gay Miller
These unit studies were put together by Gay Miller, a teacher at Mountain City Elementary in Tennessee. These are great! - SchoolExpress Unit Studies
In addition to their large selection of FREE worksheets, games, and activities, SchoolExpress offers FREE thematic units when you subscribe to their email newsletter. Nice! - The Curiosity Files™
As you read, learn, and research The Curiosity Files™ you’ll meet engaging information, puzzles, quizzes, games, and activities to keep your child actively learning in a unit-study format. Make a notebook or lapbook folder for starters, and then continue adding on to widen the study with more amazing topics in this wonderful series. - The Elephant Sanctuary Unit Studies
The Elephant Sanctuary has developed two FREE units focusing on the study of elephants. One unit is appropriate for grades K–3; the second unit is appropriate for grades 4–8. The K–3 unit consists of 35 pages of background information for the teacher and learning activities for children. The curriculum for grades 4–8 consists of 72 pages of instruction, background information, charts and graphs, activities, etc. Areas of study including social studies, literature, math, and science, have been integrated into the units. - Unit Studies by Amanda Bennett
Amanda Bennett plans her unit studies so that while the child is learning the basic material, he/she is also reinforcing other academic skills. Reading skills are emphasized with the various books studied. Writing skills are developed through writing assignments, copying and dictation and journal writing. Thinking skills mature through hands-on activities and problem analysis. - Unit Studies by Cindy Downes - Oklahoma Homeschool
History, Science, holiday, music and photography unit studies offered free at Oklahoma Homeschool by Cindy Downes.
