Description of graphical content is included between Description Start and Description End. Transcript Start > Audio Description: A title reads, "Hairbrush Interaction." A teenage boy sits in a chair holding a hair brush. On a table next to him is a plastic bin with more hair brushes. Student: [soft mouth noises] Audio Description: A new video segment. The teacher sits close by and offers a different brush by tapping it on his chair. [tapping]  Audio Description: The boy places his hand on hers as she rakes the bristles of the brush. Student: [soft vocalization] [tapping] Audio Description: She positions the brush in front of the boys chest. His hand follows her movement. [clapping] Camera person: Suzanne's copying some of the movements that she saw Franz doing; tapping. [clapping] Audio Description: She taps the back of the brush on his palm. She taps the bristles on his palm. [soft tapping] Audio Description: The boy grabs the brush and drops it in the bin. He pulls her hand toward his forehead and holds it there. [plop]  Camera person: He's requesting some pressure on his forehead. Student: [soft mouth noises]  Audio Description: She uses her free hand to offer another brush under both their hands. She rakes the bristles of the brush. She taps the bristles on the bin. The student keeps his hand on hers. She brings her head down to their hands and brushes her hair. The boy takes the brush and drops it in the bin. [plop] Audio Description: He pulls her hand toward his forehead and holds it there. She pats his palm with hers. [clapping] Audio Description: He follows her hand as she selects a different brush and rakes the bristles. He follows her hand as she taps the back of the brush on her palm. [tapping] Audio Description: He follows her hand as she brings the brush to his head and gently strokes his hair. Student: [vocalizing] [vocalizing] Audio Description: She slowly wiggles the brush in the air. He brings her hand to his forehead. She taps the back of the brush on his chest. [tapping]  Student: [soft mouth noises]  [tapping] Audio Description: A title reads, "TSBVI, 2007."