The Jigsaw method of teaching is a collection of topics that students will fully develop before coming together to form a complete idea, much like a Jigsaw puzzle is a collection of various pieces that come together to make a complete picture. More specifically, this kind of collaborative learning strategy enables individuals or small groups to take charge of a specific subcategory of a larger topic. Each individual or small group has the duty to teach their idea to the rest of the group or class after conducting research and developing it.
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Rixon.S 1981. How to use games in language teaching. London Macmillan Publishers