Teaching scientific writing in biology classes is challenging for both teachers and students. This article offers and reviews several useful 'toolkit' items that instructors of science writing can use to improve college student success. The tools in this kit are both conceptual and practical, and include: (1) Understanding the role of student metacognition, cognitive instruction, and strategic teaching, (2) Recognition of different student writing levels, (3) Applying the writing process, (4) Demonstrational classroom revision and editing, (5) Student-teacher sentence editing, (6) Student peer editing and guided student editing, (7) Student copy-editing, (8) Reflective writing, (9) Addressing plagiarism, paraphrasing, and proper in-text citations and referencing, and (10) Using external, on campus and online resources. Additionally, we discuss the new challenges of teaching scientific writing online versus face-to-face. The discussions, approaches, and exercises presented in this paper empower teachers in assisting students in their development of a personal writing style, while simultaneously building student confidence. The tools we present augment our previous presentation of the student writing toolkit, and can improve and enhance the teaching of scientific writing to undergraduate students.