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Our goal is to provide an online tool for elementary-school students and their teachers to aid in the instruction and learning of arithmetic estimation. We hope to improve student engagement in this process with a calculator that doesn't blindly give answers, but rather rewards understanding; we aim to empower teachers by offering tools to track student data and progress, so that they can focus assistance on those who need it most.


Our staging server can be found here. Use "email@admin.com" for the email and "password" for the password.


Download | Documentation | FAQ | Use cases | Milestones | Schedule | Notes | Screens


News and Events

  • Thursday May 14th, 2013 - The last class: Current Status
  • Thursday May 9th, 2013 - Release 1.0 is due!
  • Thursday May 2nd, 2013 - Release 1.0 beta is due!
  • Thursday March 28, 2013 - Release 0.5 is due!
  • Wednesday March 27, 2013 - Successfully deployed to a Heroku server!
  • Thursday March 22, 2013 - Uploaded project source code to Bitbucket.
  • Thursday March 22, 2013 - Team meeting via Google Hangout.
  • Sunday March 17, 2013 - Team meeting via Google Hangout.
  • Sunday March 3rd, 2013 - Decision made use Ruby on Rails for project
  • Thursday February 28th, 2013 - Meeting with Eleanor Demont.

Supported Browsers

Chrome, Firefox, Safari, Internet Explorer, Opera.

Updated