Phonemic awareness
Phonemic awareness, or ‘the ability to hear and manipulate the sounds within words’ (NRP, 2000) is a subset of the broader concept of phonological awareness, that is syllabification, rhyming, and segmenting of onset and rime within a syllable (Schuele & Boudreau, 2008). All aspects of phonological knowledge are useful in learning to read and write, and as teachers we make sure that each of our students becomes competent in these skills.
Phonics
Phonics is the relationship between units of sound and the printed word, and control of phonics is essential for successful reading. There are different types of phonics instruction: analytic and synthetic. Analytic phonics begins at word level, breaks the word up into syllables, then onset and rime, and finally teases out the phonemes as represented by a letter or letter cluster. Synthetic phonics moves in the other direction: from initial sounds represented by single letters, to digraphs, word patterns and eventually words. In references to phonics instruction, there is often slippage between ‘systematic’ and ‘synthetic’ phonics instruction. However, the NRP does not recommend synthetic over analytic phonics. They explain that both can be taught in an ad hoc way, or systematically, and it is systematic phonics instruction that correlates with successful reading (NRP, 2000, p. 12). Systematic phonics is defined by the NRP as teaching with a clear plan, as opposed to sporadic, point of need instruction.
Vocabulary
When NRP identifies the value of Vocabulary, it is referring to the teaching and expansion of word meanings. This is not the same as sight word recognition. In the NRP report, the concept of vocabulary includes knowledge of prefixes and suffixes, which elsewhere is included as part of spelling (for example, Adoniou, 2014).
Fluency
Fluency in reading aloud is also found to improve reading. Fluency includes accuracy, speed and prosody (intonation, stress and rhythm). It helps to improve automatic decoding, and also supports comprehension, at least with beginning readers (Paris, Carpenter, Paris, & Hamilton, 2005).
Comprehension
Comprehension is explained in Halliday’s model of language (Figure 1) as receptive meaning-making. However, the NRP review focused on Comprehension strategies, that is ways of approaching reading to help guide thinking, because these were the most common comprehension teaching practices available for them to review. For example, the pedagogic routine called ‘reciprocal reading’ lists four such strategies: prediction, questioning, clarification, and summarisation (Palincsar & Brown, 1984). There are many other resources that provide variations on that list with the same purpose (for example, Cameron, 2011).
Oral language
Finally, separating oral language from the other components of reading helps teachers to understand the value of facilitating extended coherent student talk in the classroom, rather than simple ‘vocabulary’ (Konza, 2014). For students to recognise meanings encoded in written language, it helps for them to have interacted with the vocabulary orally.
How do the Big 6 match up with Gough’s Simple Model? In Figure 4 below, the Big 6 are overlaid onto the model shown in Figure 4 below.

Figure 4: Gough’s simple model overlaid with the Big 6
Two ‘Big 6’ components fit easily into the Decoding strand: Phonological awareness and Phonics. Two fit under the Comprehension heading: Comprehension and Oral language. Fluency fits in the middle, spanning both sides, because firstly it helps students to develop automaticity in decoding, and secondly, in the early years, it also helps with comprehension (although that effect may wain as students get older (Paris et al, 2005; Pressley, 2006, page 209)). Vocabulary is obviously part of Language Comprehension, but at the same time, the morphemic knowledge (that is knowledge of the meaning of prefixes and suffixes) included in learning vocabulary means that it contributes to Decoding.