This document discusses various assessment tools that teachers can use to observe and evaluate students' language performance in the classroom. It describes tools like observation, anecdotal records, rating scales, rubrics, portfolios, oral presentations, interviews, checklists, and different types of rubrics. The key tools covered are observation during daily activities, anecdotal notes, rating scales, rubrics, portfolios, and interviews/conferences. Guidelines are provided for effectively using each tool to gather meaningful data on students' language learning progress.