None of the slideshows that are presented in class are actually posted on the Google Classroom. This means that it is extremely important that you take the necessary notes during class, and more. I would suggest writing the main notes in one colour, and as she is explaining the material further, use another colour on the side. Diagrams also help in visualizing some of the more complex material, and you should review your notes every night. If you can explain the material to someone else before a test, then you'll do fine.