Your students will drive their own learning as they do the twist with DNA's double-stranded structure. 3D Molecular Designs' friendly, interactive foam DNA model makes double-stranded DNA and single-stranded RNA. It will quickly capture your students' attention as you introduce the basics of DNA structure, then move into replication and transcription. This easy-to-build model is a perfect starting point that students can use to test their ideas and transfer their understanding to other, more complex models.