If you have a pdf that you'd like to enlarge, you can do so right from within Adobe Reader. Here's how: Go to "Print", then choose "Poster": Next, set the scale to "200%" for 4 pages (experiment for larger) and I prefer no overlap, so set it to 0: PRINT!!

Here is the link to the Google Slides Slide Show I made. https://docs.google.com/presentation/d/1Z0S5T2EYNUEx7RAFRM5rugPU2YNh1lRYnIN8pXiSJ1s/edit?usp=sharing

https://docs.google.com/presentation/d/1oow1bOuBXZMUa79d8qnH5Srqwj3e2gswJ9NCCDL9_Ks/edit?usp=sharing