Error patterns in computation : using error patterns to improve instruction /
Ashlock, Robert B.,
Error patterns in computation : using error patterns to improve instruction / Robert B. Ashlock. - 9th ed. - Upper Saddle River, N.J. : Merrill Prentice Hall, c2006. - x, 274 p. : ill. ;
0131198866
Arithmetic--Study and teaching (Elementary)
QA135.5 / .A782 2006
372.7/2044
Error patterns in computation : using error patterns to improve instruction / Robert B. Ashlock. - 9th ed. - Upper Saddle River, N.J. : Merrill Prentice Hall, c2006. - x, 274 p. : ill. ;
0131198866
Arithmetic--Study and teaching (Elementary)
QA135.5 / .A782 2006
372.7/2044