У вашего броузера проблема в совместимости с HTML5
Loksewa tayari Youtube
Part 1 - https://www.youtube.com/watch?v=0IQDd6fPtwM
Part 2 - https://www.youtube.com/watch?v=eIeyMvjpa1Y
Part 3 - https://www.youtube.com/watch?v=YqkLPV7pc74
Part 4 - https://www.youtube.com/watch?v=huDrjVslSgw
Part5 -https://www.youtube.com/watch?v=GWvTtNc7BQM
Part 6- https://www.youtube.com/watch?v=zJZvIEJUgyc
Part 7 - https://www.youtube.com/watch?v=QIQW_Ow_bNE
Part 8 - https://www.youtube.com/watch?v=U3qnEFE4ihU
Part 9 - https://www.youtube.com/watch?v=Xjgosy5BA5E
IQ Part 1 Triangles -https://www.youtube.com/watch?v=ziCZyMdXeA4
IQ Part 2 Rectangle and Squares - https://www.youtube.com/watch?v=Zqb1Thh2pjw