slide show of Past, Present, Future

For cybersmart we were learning about how to use images labeled for reuse. We had to make a slideshow of something people have used in the past and search for images from the same thing but what it looks like today. Down below there is a slide show of the images I chose and you have to guess what it is. I found cropping the images to the right shape a bit tricky. Have you been studying the past, present, and the future?