Will Pem find a snack at the big rock? Let's jump in his rocket and find out. A fun story about Pem's snack that includes these focus letters and sounds: s a t p i n m d g o c k ck e u r h b. Reading Gems is a supplementary reading program that supports a child's learning at school. Featuring original stories, delightful characters and humorous illustrations, the Reading Gems books have been designed to put the fun back into reading.