"Each book explores the history of the programming language and its application in common websites. A Mission: Code It! link at the beginning asks readers to download an activity pack from a Lerner site. Mission HTML explains what hypertext markup language looks like while walking kids through modifying the provided files and learning a little about CSS (cascading style sheets). Ruby and Python are both powerful coding languages that are fairly simple to learn, with Mission Ruby showing readers how Ruby includes a function for reversing text that leads to them building a palindrome checker. The Mission JavaScript project has readers build a fun 'guess my number' game. With simple, clean layouts and easy-to-follow directions, these books encourage kids to try new things and never give up. VERDICT First purchases for most libraries. Readers looking for hands-on learning with coding will appreciate these beginner volumes.

"--School Library Journal, Series Made Simple.