Continuity mistake: When Lin lifts the rocks around the house in the final scene, there are eleven of them. But in the last shot, there are only eight rocks.
Fruit Picking Day/Daniel Is Big Enough to Help Dad - S1-E11
Continuity mistake: The fruit on Miss Elaina's hat changes colors.
Mo Purses Mo Money Mo Problems - S1-E21
Continuity mistake: When Marty grabs the puzzles from Jackie Joyner-Kersee, he has the newspaper tucked under his arm. It's still under his arm when he says maybe doing puzzles with Max is their thing, but in the next shot, the paper is in his hand. It's back under his arm in the next shot.