Skill Builders workbooks - $3.95/book

Fantastic series! Christopher is doing the Skill Builders Algebra 1 along with Instructional Fair's Algebra 1.

I've been threatening to make him use the Skill Builders Spanish series, too - and I will! (Skill Builders has books for every subject under the sun...I should probably look to see if they've got one for Earth Science...)

Skill Builders Series
hard to pull up on Amazon, but lots of places sell them
ABC Teacher’s Outlet is a good source

Rainbow Bridge Publishing:

Division: Grades 4-6
ISBN-10: 1594412685
ISBN-13: 978-1594412684

Fractions, Decimals, & Percents: Grades 5 & 6
ISBN: 1594412693

Math grade 6
ISBN : 1-932210-05-9
1932210059

Word Problems: Grade 5
ISBN-10: 1932210776
ISBN-13: 978-1932210774

Word Problems: Grade 6
ISBN-10: 1932210784
ISBN-13: 978-1932210781

Pre-Algebra
ISBN: 1-93221-009-1
1932210091
ISBN-10: 1932210091
ISBN-13: 978-1932210095

Algebra 1
ISBN-10: 1932210105
ISBN-13: 978-1932210101

Algebra 2
ISBN-10: 1932210830
ISBN-13: 978-1932210835

Geometry Grades 4-5
ISBN: 1-932210-79-2
1932210792


Skill Builders word problem books:

Skill Builders World Problems Grade 2
ISBN-10: 1594412790
ISBN-13: 978-1594412790

Skill Builders World Problems Grade 3
ISBN-10: 1932210709
ISBN-13: 978-1932210705

Skill Builders World Problems Grade 4
ISBN-10: 1932210717
ISBN-13: 978-1932210712

Skill Builders World Problems Grade 5
ISBN-10: 1932210776
ISBN-13: 978-1932210774

Skill Builders World Problems Grade 6
ISBN-10: 1932210784
ISBN-13: 978-1932210781

Instructional Fair Workbooks
Skill Builders Word Problems Workbooks (fantastic & cheap $3.95/book)
Skill Builders Workbooks (all)
mixed review workbooks
Spectrum Math workbooks