"Use up spare parts or forgotten items from the garage to build your own miniature siege engine! Step-by-step instructions are used in this book to demonstrate basic engineering and physics skills for kids."--
"Make your own miniature medieval battlefield with ordinary items found around your house or school! Step-by-step instructions are used in this book to demonstrate basic engineering and physics skills for kids."--
"Send paper clips flying with your own miniature launcher! Step-by-step instructions are used in this book to demonstrate basic engineering and physics skills for kids."--
