There are several electronic strategies for enhancing vocal sightreading skills, or even enabling singers to practice sightreading. Here are some examples created by other conductors.

        Curwen hand signs module
        Movie of ascending major scale with Curwen hand signs
        Images of Curwen hand signs, descending major scale
        Images of Curwen hand signs, descending chromatic scale
        Curwen Hand Signs for Pre-School and Primary School Students

      Commercial sightreading exercises/programs are also increasingly available on the web. For example:
            Please note that I am not endorsing this program; I am simply pointing out that such programs exist.

      Some freeware sites:
        Ear Training Software

        For further sightsinging resources, go to the Resources page.