The model rocket did not actually launch; it rolled along a short track across a bridge he’d built from craft sticks.

The point of the project was to show how supports transferred weight to the base.

Mason explained the concept with remarkable confidence, using his hands more than his poster.

Lauren stood on one side of the table, and I stood on the other.

When a teacher asked who had helped with the project, Mason said, “My mom helped with the writing and Liam helped with the bridge.” Then, after a brief pause, he added, “Liam’s my dad.”

He said it matter-of-factly, without ceremony.