Twins Zach and Zane Smart are the Smart Boys in this Phonics Comic. They help mom out at the grocery by building a super-fast shopping cart, try to get out of a doctor's appointment by building a shrinking machine, and trick dad into thinking it's still light outside so they can finish building their robot dog. Sight words include "about, light, some and your"; story words include "amazed, frozen, peanut and triangle." The book indicates this is for ages 6 and up, not 9-12 as listed on here.