Informatie over Dash & Dot:
https://www.pregels.nl/wp-content/uploads/2017/12/Dash-en-Dot-les-1.pdf
https://portal.makewonder.com/#/curriculum/learn-to-code#overview
https://drive.google.com/file/d/0ByqTp3K3wCEAVXAxeUxBNDFjM1k/view
https://www.apple.com/swift/playgrounds/