Challenge your students to separate a mixture of iron filings, salt, and sand in this student-led lab activity, recommended for grade 6 chemistry! In the process, your students will learn about pure substances and mixtures, separation techniques, and the importance of purity. Includes teacher preparation notes, student handouts, as well as opportunities for discussion, reflection, and extension.Get the Chemical and Physical Changes unit plan associated with this activity here.Designed with MYP i