Theodor Seuss Geisel is born in Springfield, Massachusetts. At twenty-one, he publishes his first cartoon under the pen name “Dr Seuss”; his mother’s maiden name, pronounced ‘Zoice!’. Theodor marries and begins working as an illustrator...

Upon viewing the Investigating Chemical Reactions video series, students will be able to do the following: Define a chemical reaction as a process in which substances undergo changes to produce new materials with different...