As of today Canvas has a new look. CU Online has been promoting and warning of the change for weeks now, but many folks are still finding a surprise when logging-in. If this causes any confusion for your students, please refer your students to this overview.
Canvas recently introduced a new page design called the New Canvas User Interface (UI). Depending on your Canvas view, your page design may vary from the images shown in this video. However, the functionality and location of the components remain the same.