The Berenstain Bears and the Trouble at School

When Brother Bear returns to school after being out sick, he gets into a mess that gets worse and worse until Gramps gives him some advice.
While out of school for a few days with a cold, Brother Bear ignores his
make-up work. And when he returns to class, he discovers the consequences of
neglecting his responsibilities: he fails his division test. Grizzly Gramps
helps Brother learn that it's never too late to correct a mistake.