Incoming Resources
- Wedges, by Sarah Tieck
- What are wedges?, by Helen Frost; consulting editor, Gail Sauders-Smith
- Wedges, by Anne Welsbacher
- Inclined planes, a Millimages, Pearson Broadband and Schlessinger Media coproduction in association with France 5, ZDF, TVO, TFO ; producer, Emmanuel Franck ; director, Diego Zamora ; script by Adrian Raeside, Simon Jollands and Jonathan Peel
- Planos inclinados, por Sally M. Walker y Roseann Feldmann ; fotografías de Andy King