adding figures for chapter 1, adding turtle.reset()

1. I got the screenshot directly but now they look pretty large on the page. Shall I resize the figures(so the square will be smaller) or just cut the shape from the large window?  
2. I added two commands of "turtle.reset()' in the text. I am not sure if it is good. Sometimes the students are busy with copying  and pasting all the commands one by one to keep up with the instructor and  do not have the time to read the context or execute the commands in the text.
3. If this is good, I will continue working on other chapters.