In this article we examine a teacher's and multilingual students' use of multiple resources and their potential for students' meaning-making of sound and sound transmission. Students were 14-15 years old, Swedish grade 8, speaking Swedish as a second language. We examine how different strategies and multiple resources interact in creating thematic patterns in a multilingual science classroom. Data comprise 64 hours of video-and audio recordings, digital photos, field-notes, textbooks, worksheets and student notebooks. As analytical tools we use thematic development strategies, control and social interaction strategies as well as strategies of bridging multiple resources. In co-constructing the content using various resources, thematic patterns were developed through a continuous shift between everyday and scientific language due to the teacher's awareness of the unit's abstract and technical content. Findings also reveal that a strategy of control performed by the teacher marked the importance of using 'physics words' . Strategies of social interaction accentuated by earlier experiences as well as personal and humorous connotations expressed in everyday language supported meaning-making. In addition, a number of multiple resources, such as models, gestures, bodily action, drawings, reading and writing were used.this is an open access article distributed under the terms of the creative commons attribution-noncommercial-noderivatives License (http://creativecommons.org/licenses/by-nc-nd/4.0/), which permits non-commercial re-use, distribution, and reproduction in any medium, provided the original work is properly cited, and is not altered, transformed, or built upon in any way.