Wait wait wait, they are calculating trajectories now? Isn't that a bit more complex than basic algebra?

Sure seems like a hobby session, but that girl has at regular basis proven that she is the smartest one among the girls.

The chili-hen-mimikry is catching on with the ducks! The REAL hen is on the extreme right.

It's hard to tell, but it does kind of look like some trig might be involved there, which would put her at high school level for sure. If that's the case, she might be a prodigy.

It might also be that all the girls are different ages/ability levels and are having their needs met accordingly.

I love how every grouping/pairing notes is done with their faces instead of names.
So adorable :3