Minds on Math Revised Editions. Grades 7-9 Books In This Series Minds on Math 7 Rev/E by Alexander ISBN10 0201426803 / ISBN13 9780201426809 Minds on Math 8 Rev/E by Alexander ISBN10 0201426811 / ISBN13 9780201426816 Minds on Math 9 Rev/E by Alexander ISBN10 020142682X / ISBN13 9780201426823
