Take as much time as you need for this activity
If you do have time, do Activity 2.
It is a pretest, so be prepared - there will be questions you do not understand. It is a pretest, so the score you get will not affect your grade.
If your Google Classroom is up to date and you somehow still have time, please revisit
A lot of students solved the first puzzle.
A few students solved the second puzzle.
No student (as far as I know) solved the 3rd.