Worksheets are available for every academic subject, covering key concepts such as vocabulary, main idea, and essay or discussion questions, whether they are used in an electronic format or in a hard copy. Paper and pencil reinforcement of concepts is a common teaching strategy. The practice of active engagement of the fine motor muscles in producing a written response is time-tested and trusted by educators worldwide.
Many textbooks are designed with worksheets to supplement lessons or compliment them, for differentiated instruction, according to the level of the student. Math teachers give worksheets full of practice problems, numerical as well as verbal. Language Arts teachers prompt writing to enlarge grammar and vocabulary usage. Science, social studies, foreign languages, and even physical education may require written work, which is often given as a worksheet to students so they can practice and cement their grasp of the concepts covered in class.
In the early elementary grades, students may be practicing letter formation, answering questions about written content, or practicing vocabulary and concepts to increase understanding and mastery of science or math. Middle school teachers often use worksheets as warm-ups to review previously taught concepts, or as homework to reinforce the day's or week's lessons.