Often, they are practice. All students do the work of the assignment in the same way. Do all the calculations on page 120 of the arithmetic book. Write the letter B twenty times as carefully as possible. Memorize the poem on page 50.
Open assignments provide for student diversity.
Write a half page about your weekend. Find three new words in the dictionary and write sentences using them. Continue working in your workbook. Using the techniques taught to the whole class, draw a picture with crayons illustrating the season. Take an example.