Scratch programok alapozás

https://studio.code.org/s/course3/lessons/2/levels/1

https://studio.code.org/s/course2/lessons/17/levels/1

https://studio.code.org/s/dance-2019/lessons/1/levels/1

http://scratch.elte.hu/2015/04/26/ismerkedes-a-scratch-kornyezettel/

https://www.youtube.com/c/NorbertSimon1/videos