The leveled books in this new series are sure to engage even the most reluctant readers in Grades 4-8. Written at second and third grade readability levels, their high interest topics match science and social studies standards - and they are cool! Readings in the 32-page books contain unusual or amazing facts, extreme examples, or even "inside information." Young readers are rewarded with information they’ll be eager to share with friends and family. Did you know one year on Mars is 675 Earth days? And if you lived on Mars, it would take twice as long for your birthday to come around! If there are things you don't know about time, then maybe It's About Time you found out.