Stories in this episode:

• Day in History: 1923: Last day to file federal income taxes without penalty

• Rochester man explores the science of banjos

• 3-D Printers & Robots: How Zumbrota-Mazeppa Primary School is immersing students in cross-discipline learning

• New investment brings Rochester video production firm's ownership under brothers into focus

• RCTC men ready to use 'tricks of the trade' in national basketball tournament