(CNN)Richard Appiah Akoto is a Ghanaian teacher who faces a pretty discouraging dilemma.
His students need to pass a national exam that includes questions on information and communication technology (ICT) -- but the school hasn't had a computer since 2011.
So Akoto had an ingeniously simple idea: he drew computer features and software on his blackboard, using multicolored chalk.
"I wanted them to know or see how the window will appear if they were to be behind a computer," Akoto told CNN. "Always wanted them to have interest in the subject so I always do my possible best for them."