Common Core Standards
Grade 2
Reading RI.2.3
Describe the connection between a series of historical events, scientific ideas or concepts, or steps in technical procedures in a text.
This standard is all about steps, so it's time to get students to think about "this happened, then this happened, then this." However, because the specific ways to describe a series of things aren't officially covered until third grade, students don't have to be specific in how they describe that order of events.