If you are looking to purchase texbooks to keep at home, I would only purchase science.  We use the math text in school, any homework comes from their workbook or another type of worksheet. 

For Science we will be using Science by Macmillian/McGraw-Hill.  The website that goes along with the book is www..mhscience02.com

ISBN: 0-02-280038-7

For Math we will be  using Progress in Mathematics by Sadlier-Oxford.  The website to go along with our textbook is www.progressinmathematics.com

ISBN: 978-0-8215-3605-6