Below is a sample of an assignment sheet I use with my students. I prepare a template on my computer using Word and update it each week.
Before the lesson I fill in new items (like scales) I plan to assign as well as "Things to know" and a special graphic or message in the blank space at the bottom. During the lesson I type in the details of work I ask students to do on their repertoire. It is easy to prepare for many students at a time using copy and paste functions in Word.
At the end of each lesson I print the assignment sheet for the student to take home.
For students who have trouble opening an assignment book to find the correct page, I purchase an inexpensive clipboard and clip the current sheet right on top so they see it immediately when they take it out of their music bag at home.