Here is a great resource for you to show and write your lesson objectives! Each subject has its own full page with a header. In my classroom, I laminate these pages and write on them everyday with a dry erase marker.
The subjects included are reading, writing, math, phonics, word work, grammar, social studies, science, and health.
I have also included bulletin board letters (each letter is half a page) to spell out "OBJECTIVES". In my classroom, I print these letters on colorful paper to save ink!