by Kenney, Margaret J., Ed, Hirsch, Christian R., Ed
Year of Publication 1991

by Hirsch, Christian R., Reys, Barbara J.
Published in ZDM (01.11.2009)

by Schoen, Harold, Ed, Ziebarth, Steven W., Ed, Hirsch, Christian R., Ed, BrckaLorenz, Allison, Ed
Published in IAP - Information Age Publishing, Inc (29.06.2010)

by Hirsch, Christian R., Ed, Zweng, Marilyn J., Ed
Year of Publication 1985

by Schoen, Harold L., Hirsch, Christian R.
Published in The American mathematical monthly (01.02.2003)

by Schoen, Harold L., Fey, James T., Hirsch, Christian R., Coxford, Arthur F.
Published in Phi Delta Kappan (01.02.1999)

by Keller, Brian A., Hirsch, Christian R.
Published in International journal of mathematical education in science and technology (01.01.1998)

by Hirsch, Christian R., Ed, McDuffie, Amy Roth, Ed
Published in National Council of Teachers of Mathematics (05.04.2016)

by Hirsch, Christian R., Coxford, Arthur F.
Published in School science and mathematics (01.05.1997)

by Hirsch, Christian R
Published in The Mathematics teacher (01.02.1991)

by Hirsch, Christian R., Coxford, Arthur F., Fey, James T., Schoen, Harold L.
Published in The Mathematics teacher (01.11.1995)

by Schoen, Harold L., Hirsch, Christian R.
Published in The American mathematical monthly (01.02.2003)

by Coxford, Arthur F, Hirsch, Christian R
Published in Educational Leadership (01.05.1996)

by VanZoest, Laura, Hirsch, Christian R., Alavi, Youself, Stenglein, Sharon
Published in The Mathematics teacher (01.09.1996)

by VanZoest, Laura, Hirsch, Christian R, Alavi, Yousef, Stenglein, Sharon
Published in The Mathematics teacher (01.09.1996)

by Hirsch, Christian R
Published in Mathematics Teacher (1988)

by Hirsch, Christian R., Ed
Published in Mathematics Teacher (1987)

by Hirsch, Christian R., Ed
Published in Mathematics Teacher (1987)

by Hirsch, Christian R., Ed
Published in Mathematics Teacher (1987)

by Hirsch, Christian R., Ed
Published in Mathematics Teacher (1987)