The Union Jack (1ºBach/Ciencia)

Hi Students

Before hanging the flag on the wall, I would like you to click on the following links!
Pay attention and listen to the curious history of the "Union Jack"

Try to look for information to answer the following questions:
1.- Is it used in Canada?
2.- Date of its earliest origins
3.- Name of the Three Crosses represented

Bye!
Your Teacher!