Focus on moving slowly and allowing students to notice details and ask questions about the images. It's not about guessing or jumping to hypotheses! It's about wondering. (I recommend setting the Google Slides to *fullscreen* first!)
⚠️ Spoilers! Click for the explanation.
The red section of Taylor Glacier in Antarctica is known as “Blood Falls.” Notice the tent at the bottom-left to understand how large Blood Falls is. Its cause is uncertain, but it is believed that a buried saltwater reservoir is releasing iron and causing the red-color. Photo by Peter Rejcek for USAP
Sorry, this lessons doesn't connect directly to standards for Grade 1.