My Three Sons (1960)

S7E27 Ernie's Folly

While other dads lend a hand to their sons for the school science fair, Steve informs Ernie that he's on his own. Unfortunately, Ernie’s project—a poorly constructed electric clock—ends up in total failure as it won't work at all. Desperate and frustrated, he points out that many of his peers are receiving support from their parents. However, on the day of the fair, Ernie has no choice but to go to school and face the consequences of his uncooperative clock.