Called "A collaborative rubric toolkit," the search engine will help you find a pre-created rubric, and has K-6 rubric sam[les for assessing student writing as well.
This web resource is for teachers of high beginning and intermediate writing courses and intermediate ESL learners. The resource provides 8 units that 1) teach about paragraph structure and paragraph elements: topic sentence, supporting sentences, and concluding sentence 2) introduce transition words and coherence in a paragraph 3) provide the opportunity to learn about and practice basic writing skills such as making an outline and staying on topic. Clear explanations are supported by examples; therefore, teacher can use this resource for class preparation, and ESL learners can use it as additional material to learn about paragraph writing. Practice activities provided by the website are not interactive; however, most of the assessment tasks have answer keys. In addition, each unit provides lesson in a PDF format that can be used by a teacher as a handout. -- From Lena Shvidko
For ESL K-12 learners, but would be useful for adults as well. Focuses on the paragraph, rather than the essay, so makes a good beginning set of lessons.
These free videos generally show teachers at work in the classroom, leading games and activities, teaching vocabulary and grammar, assessing speech, co-teaching, etc. Would be very useful for the teacher-in-training or for the old dog who would like to see some new tricks.