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SEE MODULE

 

THRASS Definitions

Phonemes are speech sounds – there are 44 phonemes in spoken English.

Graphemes are spelling choices, and may have one, two, three or four letters.

Spelling-Choices

 

Graph

A graph is where one letter represents one phoneme (speech sound).

In c-a-t, c, a and t are all graphs as there is only one letter being used to represent the ‘c’, ‘a’ and ‘t’ phoneme/sound.

In d-u-ck, d and u are both graphs.

Cat--Duck

 

Digraph

A digraph is where two letters represent one phoneme (speech sound).

In t-r-ee, ee is a digraph as there are two letters representing the ‘ee’ phoneme/sound.

In b-ea-ch, ea and ch are both digraphs.

Tree--Beach

 

Trigraph

A trigraph is where three letters represent one phoneme (speech sound).

In w-a-tch, tch is a trigraph as there are three letters representing the ‘tch’ phoneme/sound.

In l-igh-t, igh is a trigraph.

Watch--Light

 

Quadgraph

A quadgraph is where four letters represent one phoneme (speech sound).

In eigh-t, eigh is a quadgraph as there are four letters representing the ‘eigh’ phoneme/sound.

In b-ough, ough is a quadgraph.