I looked at Clara and she nodded. “While you were absorbed in the lab book, the teacher was giving each team their instructions.”
“So why do we need to climb up to the roof? Do you remember what happened on that bridge?”
“You are talking out loud,” she warned.
“You read the experiment,” said Robbie. “We need to throw various objects off the roof and time their decent. Like Galileo did? I didn’t know he threw things off a bridge.”
We went to the stairs until they got to the third floor landing. At the top was a ladder set into the wall. The first step was about four feet above the floor. Above, was a trapdoor that was opened. “Are you sure students are supposed to climb up here?” I asked.
