First, you need to make sure your children don't have an discipline issues. Homeschooling can be very frustrating with behavior problems to deal with as well.

To Train Up a Child Book. VERY GOOD! (Practical)
http://shop.nogreaterjoy.org/product_info.php/cPath/1_14/products_id/69 

Raising Godly Tomatoes. ALSO VERY GOOD (Practical)
http://www.raisinggodlytomatoes.com/ch01.asp


Next, you should explore the Charlotte Mason method.

Simply Charlotte Mason Website (Not a curriculum, more of a guide.
http://simplycharlottemason.com/home/
Simply Charlotte Mason Early Years Guide (info for 3-4-5 year olds)
http://simplycharlottemason.com/planning/eyguide/
Simply Charlotte Mason Curriculum Guide
http://simplycharlottemason.com/planning/scmguide/
Simply Charlotte Mason Sample Weekly Schedules & Planning Guide
http://simplycharlottemason.com/planning/weekly/
Simply Charlotte Mason Daily Schedule Planners
http://simplycharlottemason.com/planning/daily/


Living Book Curriculum (A full Charlotte Mason curriculum with complete lesson plans)
http://www.livingbookscurriculum.com/

Ambleside Online (a FREE Charlotte Mason online guide to planning your own curriculum. Tons of info, could be overwhelming, but excellent material)
http://www.amblesideonline.org/

Some information using the classical approach.

Veritas Press (A Classical Christian Curriculum)
http://www.veritaspress.com/

Well Trained Mind Message Boards
w.welltrainedmind.com/forums/http://ww

Books to read...

A Charlotte Mason Companion - By Karen Andreola
Here is the book I recommend very highly.
http://www.amazon.com/Charlotte-Mason-Companion-Personal-Reflections/dp/1889209023


Living Math Website (Choose books from this website to read to your children)
http://www.livingmath.net/


1000 Good Book List (Choose books from here to read a loud)
http://www.classical-homeschooling.org/celoop/1000-primary.html


Honey for a Child's Heart  - By Gladys Hunt (Will help you choose good books to read to your children.)
http://www.amazon.com/Honey-Childs-Heart-Gladys-Hunt/dp/0310242460

Keepers of the Faith -  This is an excellent program for teaching your children skills. You should request their catalog.
http://www.keepersofthefaith.com/


I am not big on workbooks, but they are good for some things. I love the Kumon workbooks (you can get them through Rainbow Resouce) and the following:

Rod & Staff Preschool Series of Workbooks
http://www.rainbowresource.com/product/Set+of+7+Preschool+ABC+Books/004290/1221154524-1558361

Explode the Code Workbooks (I also own these learning to read/spell workbooks. I use them every year) (There are more than this one I am showing you. There are 3 for pre-k and then books 1-8 for older kids until they learn to read well. The teachers guides are completely unnecessary for books 1-8.
http://www.rainbowresource.com/product/Get+Ready+for+the+Code+Book+A/001717/1221154524-1558361