Remember what the corollary says about holes in an apparatus? Children will find all of them. Well not only will they find all the holes, but they will modify all the holes, too. We saw how they modified the holes at the top, now let's look at how they modify the holes at the bottom. Since the tubes are flexible, the children easily modify the holes by changing the positions of the holes. For example, they may lift up the end.
We did it, dude! from Thomas Bedard on Vimeo.
Are the axioms and corollaries simply a reflection of children's agency around the sensory table? I am not sure, but when I listen to their pronouncements such as "I knew we could do it, dude," and "Bam---bam-ba-bam," I can feel the agency in their words.