The slider feature on the photos will be engaging for students.
These photo pairs do a great job of illustrating the effect of climate change on glaciers.
The photos can be used in a wide variety of subjects and grade levels.
Additional Prerequisites
This site includes 12 photo pairs, but there are over 60 in the collection. Click the Repeat Photography Project link at the top of the page to read more and view the entire collection. All images are available for download.
Differentiation
These photos would act as a great phenomena to start a Next Generation Science Standards lesson or unit on the effects of global warming or the cause of rising sea levels.
The resource Images of Change by NASA has similar slidable comparison pictures that illustrate climate change. It includes glaciers as well as images from floods, hurricanes, landslides, and droughts.