They had some experience with scratch to the thing I would teach them next would be Pygame - Zero.
Our team had given them a YouTube series for the same and we're still solving their doubts, you can try the same.
Some students have also tried to make apps using QT and Kivy.
The best thing that you can teach someone learning programming is that everything that you see is likely to be a line of code. However, there could be layer of complexity behind.
Pygame -Zero is not bad, frankly speaking I just heard of it.