  In this paper, we present the Quantum Information Software Developer Kit -
Qiskit, for teaching quantum computing to undergraduate students, with basic
knowledge of quantum mechanics postulates. We focus on presenting the
construction of the programs on any common laptop or desktop computer and their
execution on real quantum processors through the remote access to the quantum
hardware available on the IBM Quantum Experience platform. The codes are made
available throughout the text so that readers, even with little experience in
scientific computing, can reproduce them and adopt the methods discussed in
this paper to address their own quantum computing projects. The results
presented are in agreement with theoretical predictions and show the
effectiveness of the Qiskit package as a robust classroom working tool for the
introduction of applied concepts of quantum computing and quantum information
theory.
