What valuable knowledge did the boy from district 3 have?

The boy from District 3 in "The Hunger Games" series possessed valuable knowledge in technology and engineering, which stemmed from his district's focus on electronics and innovation. His skills included understanding how to create and manipulate devices, making him a potential asset for survival in the arena. This expertise not only gave him an edge in crafting useful tools but also allowed him to devise strategic plans during the Games. Ultimately, his background highlighted the importance of technical skills in a competitive environment.