Children find hindi difficult due to identification of the consonants and matras. Repetition is the keyword for the young ones.They enjoy repeating the same thing over & over again.Here one worksheet is for learning matras & then the barah khadi.The pdf document is the older hindi text book (NCERT) which acts as a guide to teach the matras & the words to be learnt alongwith .so that by the end of these exercises ,,your child is the master of Hindi spellings & reading.