I taught all 9th grade last year, and this year I'm teaching both 9th and 12th. On the first day of school I do a true/false quiz about myself (got the idea from the forum!) so that they can start getting to know me right away. My 9th graders LOVED THIS, but I'm worried that the seniors will think it's too childish. Does anyone have any ideas? What do you do on the first day?