lesson+tasks
https://infotest.org.ua/test-kontrol.php?les_id=148&class_id=6
1. http://LearningApps.org/watch?v=ps59k2gv501
2. http://LearningApps.org/watch?v=pqnuudhqt01
3. http://learningapps.org/watch?v=pawi9fj1t01
4. http://learningapps.org/watch?v=p7s0ceyx101
5. http://learningapps.org/watch?v=pxpva6k4201
6. http://learningapps.org/watch?v=p0eh38z8a01
7. http://LearningApps.org/watch?v=pqzf46wuc01
8. http://LearningApps.org/watch?v=p17ksp73201
9. http://learningapps.org/watch?v=pi3ozres301
10. http://LearningApps.org/watch?v=pz6wx2pfn01
