Use these 12 Blox to build lots of complex words. Includes 8 Green Blox with digraphs - sh , th, etc.; blends - sl, tw, gr, thr, etc. and 2 Blox with consonant clusters/word endings - nch, ff, ld and more. Also includes 2 Red Vowel Blox , 2 Blue Consonant Blox and 45 double-sided Blox Cards that will help hone reading/spelling skills with these phonetic patterns. On the front side of the card is a picture and the word. The student can use this as a model to match the Blox. The reverse side of the card has the picture and only the colors of the Blox, but no letters. This is more challenging. GR: 1 - 4.