Nick and Tesla's Solar-Powered Showdown, A Mystery with Sun-Powered Gadgets You Can Build Yourself, Quirk Books, Bob Pflugfelder, Steve Hockensmith,Children’s / Teenage fiction: General, modern and contemporary fiction,Children’s / Teenage fiction and true stories, stem gifts for kids;homeschooling;family activities;activities for kids;projects;action;adventure;common core;educator;engineering;inventors;maker;mystery;science;STEM;technology;teacher;kids books ages 9-12;adventure books;books for kids age 9 12;books for 8 year old boys;books for 11 year old boys;girls books ages 9-12;books for 12 year old girls;books for 10 year old boys;books for 9 year old boys;books for 11 year old girls;books for 12 year old boys;books for boys age 9 12,, Nick and Tesla, United States, en-UShttps://www.penguinrandomhouse.comstem gifts for kids;homeschooling;family activities;activities for kids;projects;action;adventure;common core;educator;engineering;inventors;maker;mystery;science;STEM;technology;teacher;kids books ages 9-12;adventure books;books for kids age 9 12;books for 8 year old boys;books for 11 year old boys;girls books ages 9-12;books for 12 year old girls;books for 10 year old boys;books for 9 year old boys;books for 11 year old girls;books for 12 year old boys;books for boys age 9 12, [BLURB],[CITY],,books, ebooks, biblet, Book2look