States of Matter: Solids unit contains over 50 pages of material specifically designed for students with special learning needs, especially autism. This unit address the characteristics of solids in a simplified but rigorous way for students with diverse learning needs to make meaningful and authentic connections to the material. There are many opportunities for students to engage in repeated information on this state of matter, solids. This repetition encourages a true understanding of solids. Finally, many of the solids activities and assessments include more than one version, suggestions for differentiation, and options for presentation.