摘要：This article aims to explain the content and implementation of online biology learning materials during the COVID-19 pandemic in SMA / MA / SMK. Face-to-face learning that is transformed into online learning has a profound impact on the content and amount of material taught by teachers to students. Even with the implementation of the emergency curriculum which reduces some basic competencies in one subject, there are still materials that are not conveyed by the teacher for several reasons. This is due to the selection of essential materials, allocation of time, facilities and media, as well as student learning fatigue using online platforms. This article is the result of observations, document studies, and library research. The schools selected in observing the implementation of the learning materials were SMAN 16 Padang, MAN 2 Padang, and SMK Kesehatan Gema Nusantara Padang. This is due to the selection of essential materials, the allocation of time, facilities and media, as well as student learning fatigue using online platforms. Content analysis and implementation were carried out on the learning material which took place from July-October 2020. The analysis of this research was taken from a qualitative approach, and the results were described in a descriptive-analytical manner. The results showed that some of the material subtopics contained in the curriculum and contained in the lesson plan were not delivered by the teacher 25% to 40% in ineffective online learning.
