Whatever you were learning, write about it. Since this is post is in middle school, your teacher probably expects atleast half a page to be written in. Write about whatever was asked to be written in the entry. If you're reading a book for class, it may need to be a summary of what you read in the book. If you had an assignment, it's probably about the assignment. "Journal entry" means to write in your notebook, so this wasn't very clear what you need help with, ask a classmate about what assignment needs to be written about
It depends how you want to travel and where too. I suggest just tell your close friends and family
I don't know if there are options to choose from, but I'll explain what happened. Pike was a dog who refused to do his duty one morning, but hid and kept sleeping. So, Spitz, who is the alpha male, the leader dog, punishes Pike. Buck, the dog-hero of the story, tries to interfere and clash with Spitz, but to no avail because Francois, the human leader, whips him. So, Spitz manages to punish Pike for his disobedience.