A Plea for Spatial Literacy

Some years ago, when my younger child was about 5 years old, a friend of mine was pregnant. Because she was having premature contractions, she was not supposed to exert herself too much, so shopping for baby supplies was difficult for her. I offered to lend her our old crib, which had been dismantled and stored in our attic.

My husband and I took the components to her house, assuming it would be a snap to reassemble the crib. After all, we had once put it together (albeit with written