Based on the original Ultimate Classification of Matter Card Sort, this is the sixth of eleven interactive digital activities for classifying Matter into Pure Substances or Mixtures. With all the needed rigor for academic study AND super fun for ALL ages, you will love this one! Designed to both teach and guide students, this interactive, self-checking, digital adaptation is a great for individual learning, practice, review, and assessment; perfect for homeschooling, online tutors, and the auto