Maps convey information about the world. Modern technologies have changed how people create maps & the ways they access them. Looking at old maps can show how differently the world was understood in the past. Mapping the sea floor is very difficult, because humans can only stay underwater for short periods of time. While all of the land on Earth has been mapped, parts of the sea floor are still to be explored. Sapphire level titles provide a selection of stories & non-fiction titles chosen for their range of content, narrative & points of view. This level encourages readers to form opinions & discuss their own reading tastes. PM Guided Reading Non-fiction books are fascinating texts that increase in word count & pages in line with progression of children’s reading age, for appropriate literacy skills development. The books represent all the standard text types & contain literal, inferential & applied knowledge questions to test comprehension & promote discussion. pm-gr-books pm-new-2017 pm-2017 pm 19-offer