This is to be used after used after the Montessori pink and blue series. The set contains words with 20 common phonograms: sh, ch, ph, th, ai, a-e, ea, ee, ie, o-e, oa, i-e, ar, or, oo, ow, u-e, ir, ou, and qu. The materials are set out in a simple form insuring that the child will gradually progress from reading simple words with phongrams to longer more complex words. The set includes: - 6 pictures with 6 word cards for each of the 20 phonograms to match (Total is 120 photo cards and 120 word cards) - 1 word list for each of the 20 phonograms (20 in total) - 2 sentence strips for each of the 20 phonograms (40 in total) - 1 booklet for each of the 20 phonograms (20 in total). Each booklet contains 12 pages, with a different word on each page containing the designated phonogram. The word is printed in black, with the phonogram in red. - Green Series Instruction The font used in these set is Sassoon Montessori font. All the cards were laminated except for the booklets. (The patterns on the word lists and sentence cards were reflection of light. There are no patterns on the actual green paper.) Suitable for ages 5 and up.