Loose parts are a wonderful resource for open-ended free-flow play. The use of loose parts encourages children to be creative and use their imaginations and can be very appropriate for mixed age groups as the materials are used in a developmentally appropriate way whatever age the child is. Please click on the link for more information https://www.playscotland.org/resources/print/Loose-Parts-Play-Tookit-Revised.pdf?plsctml_id=10924&fbclid=IwAR0SDoavurwxCqYnb-rLGLwaAR0RAOVrSE7uaHxDbIkpHFl5G1OK4jbEVW8