Mathlinks McGraw Hill Ryerson's popular Mathlinks series runs from Grades 7 through 9 and is used in schools across Western Canada. Books In This Series Mathlinks 7 by Mcaskill, Bruce| Watt, Wa ISBN10 0070973350 / ISBN13 9780070973350 Mathlinks 8 by Mcaskill, Bruce| Watt, Wa ISBN10 0070973385 / ISBN13 9780070973381 Mathlinks 9 by Mcaskill, Bruce ISBN10 0070973407 / ISBN13 9780070973404