Using Google Earth, you can easily access the satellite image of the area in the past. Just click on the year which appears on the left bottom corner and it will bring up a time slider in the top left. Select the time period you want and screenshot the image. Examples are screenshot for ECP.
ECP 2010
ECP 2021
Using https://juxtapose.knightlab.com/ you can generate the image slider for easy comparison of the 2 images. You can embed it with the html code generated like below. Or just copy the link and give to the students
https://cdn.knightlab.com/libs/juxtapose/latest/embed/index.html?uid=0a47ee14-e230-11ec-b5bb-6595d9b17862
Students can easily compare the 2 images. How effective is the breakwaters in protecting the East Coast? You can see that there the beach has grown bigger, probably due to the greater amount of beach deposit.
A great way to compare the images in terms of spatial and temporal scales.