Download or read book Jack the Builder written by Stuart J. Murphy and published by Harper Collins. This book was released on 2006-02-28 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt: Jack stacks up blocks high. Two make a robot, five make a boat, and fifteen make...whatever you can imagine! Math becomes child's play as young readers are introduced to the skill of counting on, a first step toward mastering addition.