Mr. Gean has noticed that his students leave the classroom messy when they leave. He wants his students to tidy up the classroom before they go home every day. What can Mr. Gean do to ensure that his...

Mr. Gean has noticed that his students leave the classroom messy when they leave. He wants his students to tidy up the classroom before they go home every day. What can Mr. Gean do to ensure that his students act more responsibly?

a. Ask his students to sign a “responsibility pledge,” then assess their own actions against what they signed.

b. Clean up the classroom himself after the students leave every day.

c. Put up a sign stating rules of responsible behavior in the classroom.

d. Ask a few students to volunteer for tidying up the classroom every day.