Kurt Killewald chose to discuss the disadvantages of overusing technology in classrooms as the focus of his presentation. As a future educator obtaining a degree in secondary education, he wants to thoughtfully incorporate technology into his teachings while also being aware of its downsides. Some potential negative impacts of excessive technology use include students spending too much time passively engaged with screens instead of interacting with others, difficulties mastering necessary skills beyond just using software or the internet, and security or distraction issues from unfiltered content online. Killewald aims to utilize technology as an effective tool for students while preventing it from becoming the central focus of classroom instruction.