Thank you so much! I actually had searched for it on YouTube but didn't come up with anything naming the piece specifically.
I may write a post some day on how to do a Google search effectively. There are some tricks of the trade that give you quality results really fast. With your "problem", the only thing I entered was the
book's title + video only (strip off the junk parameters), and Mr. Alan Chan on YouTube was the first search result. I GUESSED it should be book 1 (you didn't give that info), so I refined the search in
his profile on YouTube. Since he shows the music sheets in his most recent recordings (he adds "sheet music" to the title), it didn't take very long to locate the right pieces with reasonable accuracy (6, 7, & 8 in the book, judging from your pictures).
EDIT: with hindsight, a Google search for
First lessons in Bach book 1 sheet music + video only (strip off the junk parameters) would have been faster.

Is this book standard exam repertoire? I didn't know.
Well, not this particular book itself, of course; the contents (works by Bach). I don't work with the official grade system, but from what I understand, this could be grade 2/3.
Paul