Wind is moving air. People make use of wind for transport & recreation, & as a source of renewable energy. In the future, wind power is expected to provide a large part of the world’s electricity supply. Wind is also a key factor in extreme weather events, such as tornadoes & hurricanes. People study the wind in order to use its power for energy, & to protect homes & infrastructure from damaging windstorms. Ruby level titles give readers the variety they need to become confident & successful readers, using a range of characters, topics & text styles keep children engaged & encourage discussion. 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 19-offer