This post is mostly covered on our website, but I wanted to create a blog post as well for those who may not follow both. After much deliberation in the spring, we made the decision to change the structure of our series and move away from syllable types as our main organizational component. This wasn’t an easy decision, but I feel it was the right choice for us. Here is an outline of the process we went through to make this change.
To begin with, we started by gathering feedback about the series. We spoke to teachers in a variety of positions and with a variety of experience and began to document their observations. The following key strengths were noted about the series:
- The natural language structures are a real strength of the series (e.g., saying “The hen rested in the nest” rather than “The hen did rest in the nest”)
- The illustrations and stock photos are great and help to engage young readers
- The books are true “stories” and allow for discussion, prediction, inference, etc, which is an important feature to keep in the series
- Readers love the books and feel successful reading them – the focus on short vowels for the Green Series has helped many students take their first steps into decoding in a more successful way than with levelled readers
- The inclusion of beginning prefixes and suffixes is a very important feature of the series, and provides opportunities for students to explore the morphological structure of our language
- The books include Canadian content, which is important for Canadian students
Receiving feedback is great when the reviews are positive. It isn’t always as easy to receive suggestions for change, however onwards we forged, and collected the following key recommendations:
- We need to include more diversity of characters and places in our photos and illustrations (note – the Green Series has already been updated with this in mind, but not the Purple)
- Some of the Green Series books have too much repetition in phrasing (e.g., Pig is up. Hen is up. Dog is up) – this might reinforce students “guessing” the words rather than actually decoding them
- There seems to be too big of a gap between the end of the Green Series and the beginning of the Purple – the Purple Series is quite challenging and has a lot of polysyllabic words that some students find challenging
- The Scope and Sequence of the Green Series could use some tweaking – some of the consonant clusters included at the beginning of the Green Series (e.g., “still” in “Get up Cat”) are quite challenging – it might be easier for students to learn digraphs first, then introduce consonant clusters in a more systematic way, starting with clusters with continuous sounds (e.g., sl, fl), then moving to clusters with stop sounds (e.g., st, sp)
We also received some wish-list items – some of which we decided to address right away, and others that we will consider in the future:
- It would be great to have a series before the Green Series that moves a bit slower (e.g., less text on the page, no consonant clusters or digraphs) – the Green Series is a challenging starting point for some readers
- It would be great to have multiple books at each level (e.g., more than one Book 1 in the Green Series) for students who need consolidation of a concept before moving on
- It would be great to have books that are linked to the general themes found in the Science and Social Studies Curriculum, for instance books on living and non-living things for Grade 1 students
Ultimately, we decided to move away from using syllable types as the main structure of our series. Although we still feel syllable types are still very useful for students to learn, we’ve discovered that it doesn’t always make sense (in the context of decodable books) to cover all concepts within a syllable type before moving on to the next syllable type. For instance, some vowel teams such as <ee> are very regular and predictable and would make sense to include near the beginning of the series. Others, such as <ea>, have multiple sounds and would fit better later on in the series. Moving away from syllable types would allow us to more effectively cluster concepts from “simple” to “complex”, and we felt it will improve the overall flow of the series.
Introducing our Updated Series!
Yellow Series (10 Titles – 5 Fiction and 5 Photo)

We have written 10 new books (5 Fiction, 5 Photo) that will fall before the current Green Series. The Yellow Series starts with short <a> and short <o> and a selection of consonants. By the end of the 10 books we have introduced:
- all short vowels and all consonants
- consonant digraph <ck>
- the High frequency Words “a”, “the”, and “to”
- the “FLOSS” or “BOMP” pattern (double the final <s>, <f>, <l>, and <z> after a single short vowel, which also lends itself to a beginning exploration of orthography)
- 2 forms of suffix <-s>:
- suffix <-s> as third person singular present tense is very common in “book language”, particularly in early decodable texts, so it is important for students to develop an understanding of this early in their book exploration
- suffix <-s> as a plural is a great introduction to how a suffix is a morpheme (meaning unit) – exploring these concepts early helps students begin to understand the concept of “base” plus “affix”, which is critically important for early readers
- Punctuation concepts found in many Concepts of Print Assessments (period, comma, questions mark and exclamation mark)
Green Series – 10 Fiction Titles and 10 Photo Titles


The Green Series still focuses on short vowel sounds, as well as some simple suffixes and irregular words. We have tweaked the 20 books in the Green Series in the following ways:
- Consonant digraph <th> and <sh> are introduced earlier in the series, with <ch> following a bit later in the series. Due to students sometimes confusing <sh> and <ch>, we have deliberately separated their introduction by several books.
- Initial clusters that are continuous sounds (e.g., <l> and <r> clusters) are the first clusters introduced, followed by final clusters (e.g., mp, st), then initial clusters with stop sounds (e.g., st, sp), which are harder to blend
- <ng> and <nk> are introduced later in the series as the nasal <n> sometimes makes these sounds harder to pronounce and hear
- Book 1 of the Photo Series is now lined up with Book 4 of the Fiction Series – we received feedback that the Photo Books were a little bit trickier, so we adjusted their starting point
- We have adjusted various lines of text to remove some of the repetition found in the series and encourage students to really look at each line of text.
- We have tightened up our introduction to the “doubling rule” with a book that focuses on multiple examples of this concept
- suffix <-ing> is added before suffix <-ed>
Blue Series – 10 Photo Titles

We have written 10 additional books which will fall before the current Purple Series. The Blue Series introduces:
- Compound words
- Long vowel sounds in open syllables (e.g., go, she)
- <y> as long i (.e.g, shy, cry) and <y> as long e (e.g., city)
- Soft c
- Vowel digraphs <ee>, <ay>, <ai>
- R-controlled vowels <er> and <or>
- “ild”, “ind”, “old” and “ost”
- “marker” concept: <e> following <v>
Purple Series – 10 Photo Titles

The Purple Series continues to introduce the Vowel-Consonant-e pattern. Although the majority of the story lines and text wording have stayed the same, we have made the following adjustments:
- Updated some images with more diversity of people and places
- Simplified language in current books (e.g., the removal of some of the more challenging polysyllabic words), and the addition of concepts now introduced in the Blue Series
- inclusion of a smaller number of inflectional and derivational suffixes in a more controlled sequence
We are pleased to announce that our updated series is now available for purchase at www.syllasense.com!