This is from a 1960s – 70s era earth science textbook. You start at the bottom where the two sets of tracks are apart and you ask the students to tell you what they think is happening. They do not see the top two sections. Then you uncover the middle section and ask the students to add to or revise their stories. What additional details can you add? Finally, you show them the third part of the photo so that they can write the conclusion. I thought an interesting twist would be to change it so that the little footprints walk away.

So can you tell me a story?