This imaginative cross-curricular resource is the perfect way to reinforce basic math skills as well as introduce the study of great "thinkers" to your class. It includes two short biographies: one for Leonardo da Vinci and one for Gregor Mendel. Both contain secret, embedded information. Students must study the biography and crack the code to answer a set of worksheet questions. Within these hidden codes, students will practice number sequences and place value. Level: Easy