Landmarks in the Thousands

By Susan J. Russell, Catherine Anderson, Beverly Cory, Andee Rubin

Data kids cats and ads

By Andee Rubin

Emphasis on mathematical thinking and teaching strategies on data analysis.

Electronic Quills

By Bertram C. Bruce, With Contributi Barnhardt And Teachers, Andee Rubin

Different Shapes Equal Pieces

By Susan J. Russell, Andee Rubin

Electronic Quills

By Bertram C. Bruce, With Contributi Barnhardt And Teachers, Andee Rubin

Electronic Quills

By Bertram C. Bruce, With Contributi Barnhardt And Teachers, Andee Rubin

Electronic Quills

By Bertram C. Bruce, With Contributi Barnhardt And Teachers, Andee Rubin

Landmarks in the hundreds

By Susan J. Russell