 Interactive Workbook: Addition & Subtraction (Grades 13)
 Maths Explorers: Book 1 by Alan Brighouse, David Godber, et all 20 March, 1989
 Activity Maths: Level 5  Teacher's Book (Activity Maths) by Dave Miller, 1990
 Activity Maths: Levels 8, 9 and 10  Pack (Activity Maths) by Dave Miller, 1992
 Measures (Action Maths) by Ivan Bulloch, 26 January, 1995
 Activity Maths: Levels 8, 9 and 10  Teacher's Book (Activity Maths) by Dave Miller, 1992
 Maths Explorers: Book 6 by Alan Brighouse, David Godber, et all 20 March, 1989
 Maths Explorers: Book 3 by Alan Brighouse, David Godber, et all 20 March, 1989
 Maths Explorers: Book 4 by Alan Brighouse, David Godber, et all 20 March, 1989
 Maths Explorers: Book 5 by Alan Brighouse, David Godber, et all 20 March, 1989
