VoiceFlash Card Maker Pro uses the built-in text to speech engine of the Android platform to read back the card’s question and answer to the user. The text to speech audio feature can be activated with single screen tap during playback of the flash card deck.

The technique in which leaning is facilitated by the use of sound is called auditory learning.  According to Nusa Maal (2004), 20% – 30% of people are auditory learners. Even though less than one-third of the population learns by auditory means, this is the primary method employed by US schools for teaching children. Auditory instruction involves lecture, recalling information in sequence, and teaching through reading. It is important to note,

Although reading might seem, on the surface, to be a ‘visual’ activity, research indicates that making sense of a string of syllables, words, sentences, and paragraphs is a left-brain (linear-sequential-analytical) function. Other types of information such as pictures, images, maps, charts, diagrams, and melodies are primarily processed in the part of the brain that specializes in perceiving patterns and integrating component parts into a recognizable whole.
(Dalton & Farmer, 2002, p. 389)

Since reading processing takes place in the language center of the brain, reading is an Auditory activity, not a visual activity. Auditory learners prefer to learn by having someone verbally teach them, or through reading. If your child is an auditory learner, text to speech audio playback and traditional teaching methods are likely to be effective for helping your child learn.

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