In Letter Groups for Grades 1 and 2, pupils learn the letter groups ce, ci, ge, gi, che, chi, ghe, ghi, cv and gv; the diphthongs ia, ea, ie, oa and ua; spelling m before p and b; spelling with a and i; spelling with x and cs; spelling with oo, uu, cc, nn, ee and iii; and the prefixes des-, dez-, de-, im- and in-. The workbook includes gold star-shaped stickers to decorate the included Diploma for the Most Persevering Pupil.