Many of our courses require an account in the CAS-ILE system (previously called Mathable). The cost is $99 to purchase an individual course account, and there is no separate textbook required.

Accounts for Partner High Schools: High schools participating in the Netmath Partner High School Program should contact CAS-ILE ( directly for pricing.

The CAS-ILE system fully integrates three things:

  1. Courseware designed to help students learn by dynamic exploration and visualization,
  2. A web-based interface to the computer algebra system Mathematica for students to perform calculations and write full explanations of their solution process,
  3. A Learning Management System to streamline administration of the course and promote communication between students, instructors, and mentors.

Note: You will receive information about how to sign up for a CAS-ILE account in after you enroll in the course. We recommend not creating a CAS-ILE account until you receive this information.

Because CAS-ILE is a web based service, students will need to be able to work with a consistent internet connection. In addition, CAS-ILE is currently best supported on either Chrome or Firefox web browsers, so students must download and install the latest version of Chrome or Firefox.

For more information, and to see an overview of the CAS-ILE system, please view Introduction to CAS-ILE.

Mathable student view.

CAS-ILE student view

Mathable solution.

CAS-ILE student solution