Tangrams
https://www.starfall.com/h/geometry/puzzles-easy/?
https://www.abcya.com/games/tangrams
https://www.turtlediary.com/game/tangrams.html
https://www.tangram-channel.com/
https://ny.pbslearningmedia.org/resource/ket-earlychild-art12/tangrams/#.W3h5FS3MyLI
https://www.youtube.com/watch?v=C4wFwBYebYg - Tangram story - The Coyote and the Bear
https://www.youtube.com/watch?v=akzmnz1tXXI - Grandfather Tang's Story - By Ann Tompert
https://www.youtube.com/watch?v=MR-4Mq0FB3I