Some of the possibilities are shown below. View and edit these and more example files at https://www.geogebra.org/u/tung+ken+lam
Boat Unit: Vary the proportions of the rectangle to see the next steps, unit and complete assembly by clicking on the paperratio slider and dragging the dot.
Waterbomb Corrugation: 3D modelling of rigid origami. You can pause the animation and manually set the values of the sliders.
Haga’s Turned Up Part (TUP): Virtually fold a corner of a square by dragging the red point.