I've read a number of interesting articles about the KWL document, also known as the KWHL document. The document can be used to tracks what a student knows (K), wants to know (W), and has learned (L) about a topic or subject. It can be used before, during, and after research projects. The (H) is a useful addition if you'd like students to record how they learned. It's useful to help learners of any age to see distance travelled. This link to the Education World website describes using the (H) at the end, KWLH.
I particularly like using KWHL as I have found that it can help overcome low self-esteem of those who believe they learn nothing! It is also useful if you are trying to evidence workshop outcomes. I have added the KWHL document but also kept one page as KWL. A suitable tool to be used across all Key Stages.