prior knowledge of the text or topic to be studied. By asking students what they already know, students are thinking about prior experiences or knowledge about the topic. Next, KWL charts set a purpose for the unit. Students can add their input to the topic by asking them what they want to know. Students then have a purpose for participating and engaging in the topic. Also, using a KWL chart allows students to expand their ideas beyond the text used in the classroom. By being aware of students' interests, the teacher has the ability to create projects and assignments that the students will enjoy. A KWL chart is a tool that can be used to drive instruction as well as guide student learning. KWL charts are used by elementary teachers from literature to science. They are also used to teach historical content at the elementary level. Study tool A KWL chart can be used as a study tool for an individual, group, or entire class. It is a way to synthesize information into a visual aid. The students are also able to keep track of what they have done and what they still would like, or need to do. Required materials Materials required can vary on the type of classroom activity the teacher intends to carry. For a classroom activity if the teacher divides the class for a particular topic then one paper with a KWL chart per group shall be given. But if the teacher wants every child to brainstorm on the given topic, they shall have their own student paper copy. Specific learners KWL charts can be used with all students, however, there are specific groups of students that lend themselves quite well to this strategy, including visual learners, young learners, or ESL learners. As the chart is a graphic organizer it can aid visual learners. The information is presented in a user-friendly way that is visually accessible. Due to the visual nature of the KWL chart it can also be beneficial for young learners such as preschoolers. Words may not be necessary, and pictures can be used to express the chart's ideas. As pictures can be used alone or in conjunction with words, the KWL chart may assist students learning a second language. Adaptations There are various adaptations of KWL charts that can be used within the classroom. Hill One adaptation as created by HillInstructional strategies online.