Alexander Graham Bell for Kids His Life and Inventions, with 21 Activities Carson Mary Kay Heftet / 2018 / Engelsk
Weather Projects for Young Scientists Experiments and Science Fair Ideas Carson Mary Kay Heftet / 2007 / Engelsk
Beyond the Solar System Exploring Galaxies, Black Holes, Alien Planets, and More; A History with 21 Activities Carson Mary Kay Heftet / 2013 / Engelsk
Wright Brothers for Kids How They Invented the Airplane, 21 Activities Exploring the Science and History of Flight Carson Mary Kay Heftet / 2003 / Engelsk
