The pop-ups we have made so far were attached directly to the book. Pop-up constructions can be more complex than this. This lesson explores “Stair-step” pop-ups, which are pop-ups built onto other pop-ups. Through making stair-step pop-ups and studying their properties, students are introduced to systems concepts and geometric forms.
Outcome: From an edge view of a stair-step pop-up, you see similar shapes repeated, from one pop-up to the next. The shapes change from a parallelogram to a rectangle and back to a parallelogram as you open and close the book.
4. System Diagram: At the bottom of the Stair-step Pop-up Worksheet are some prompts leading to a system diagram for the stair-step pop-up. See a video about system diagrams for pop-ups in series and parallel.
Outcome: The system diagram for a stair-step pop-up shows how the output of one pop-up is the input to the next.