The importance of text complexity has gained recognition since the Common Core State Standards (CCSS-ELA) were developed. The "Linking Science and Literacy for All Learners" (LS&L4AL) program uses multimodal STEM text sets to link reading grade-band complex texts with Next Generation Science Standards (NGSS) sense-making. We define a multimodal STEM text set as a coherent collection of resources pertaining to an anchor phenomenon and line of inquiry that support learners' acquiring the disciplinary literacy skills and sense-making called for by the NGSS and CCSS-ELA shared practices. The anchor phenomenon and line of inquiry are determined by the anchor text--a rich, complex grade-band level text about natural phenomena with research-generated data from recent STEM primary literature. In this study, we report on a qualitative analysis of how English language arts, special education, and science middle school teachers (N=11) scaffolded instruction to support students, including students with learning disabilities, in reading complex STEM texts to develop sense-making of scientific phenomena.