We’re so glad that you’re working to expand the wide world of OER Trigonometry materials. As you know,trigonometry  is a very rewarding subject to teach, as it can be approached so many ways. This variety means that though many OER materials already exist for trigonometry, there’s no one-size-fits-all solution in place. Even if you find a template course you admire, you’re likely to need to do at least some customization to fit your school, your program, and your students.

Three small seated figurines posed as if in conversation. Two sit on a sugar cube on the left, one on a sugar cube on the right.Let’s Talk!

We invite you to share in the collaboration and wisdom-sharing of the OER community. Slack is a free, easy-to-use tool for communication and collaboration. It offers channels for group conversations on specific topics, including the “Math” channel. You can also send direct messages to individuals or groups. Use it from any computer or mobile device.




Lumen Courses

Lumen offers several template courses that can serve as starting points for your own development. You can mix, match, and adapt anything from the courses below quite easily.

When you click the link for full MOM courses, please use guest as the username, no password is required.




Lippman Rasmussen – editable Full MOM Course Trigonometry instructs students in trigonometric functions, their inverses, properties, graphs and applications. Course content includes trigonometric equations and identities, the laws of sines and cosines, polar coordinates and graphs, parametric equations and elementary vector operations. CC-BY
Lumen/OpenStax – editable in-text videos  Welcome to Precalculus II, a derivative work of Jay Abramson’s Preclaculus available from OpenStax. This text includes topics in trigonometry, vectors, systems of linear equations, conic sections, sequences and series and a light introduction to limits and derivatives. CC-BY


ATD Information

This section provides support for faculty and course developers involved with the Achieving the Dream OER Degree Initiative.

Collaboration Meetings

Lumen is hosting Collaboration meetings to help bring faculty together as they work on developing their courses. The next meeting for College Math will be on Friday October 21 at 10:00am PT/1:00pm ET. Meetings are hosted in Uber Conference. The meeting can be found at or you can call in at 1-503-715-2599.  You will benefit more from the collaboration if you join from your computer, but it is not required. No PIN is needed to join the call.

You will find a log of our past meetings here.