Writing clear, impactful reports is a crucial skill for science students, but few books focus on this area for the undergraduate. Particularly useful for biology students, this text adopts a hands-on approach, using example reports and published papers as models to put guidance into practice. An introductory chapter familiarizes undergraduates with the principles of writing science. Two model reports are then developed, walking students through experimental and observational teaching-lab reports. The structure and content of the Introduction, Methods and Materials, Results, and Discussion are explained, together with tips for the title, abstract, and references. Students are then guided on how to polish their first draft. The last section of the book analyzes two published papers, helping the reader transition to reporting original research. Clearly and concisely written, this text offers a much-needed lifeline for science students facing science report-writing for the first time, and for those looking to hone their writing skills.