Continuity mistake: When D.J. is explaining about vowels, the pattern on Michelle's dress keeps changing. At times, there are flowers over her right shoulder and other times, they are more towards the left. In addition to this, her hair also keeps changing. At times the end of her ponytail is curved outwards and other times, it's straight.
Continuity mistake: When DJ and Stephanie are done playing with the twins and Jesse comes in, he takes the booties off their feet, thinking that they still had their hospital bracelets on. While he is still in the kitchen, you can see that the booties are on the table between the twins. These keep changing positions in between shots, even when Jesse goes in the living room leaving the twins unattended.