Jericho High School teacher Greg Berry hired some help this week to teach his geometry class.

Mets star Pete Alonso helped him out through Zoom.

Thanks to a donation to Pete's charity, Mr. Berry got the Home Run Derby champion to knock quadrilaterals out of the park. 

Alonso also had a message for Jericho's baseball team.

"I know you want to get back on the field, but keep powering through and persevering," says Alonso.