Meet the Quirkle Ollie Oxygen. Ollie teaches his friends, Oz Otter, Oscar Ox, and Otto Ostrich, about oxygen in a story written predominately in words with the initial short vowel O. Discover what happens when Oz Otter, Oscar Ox, and Otto Ostrich find themselves surrounded by a fire in the forest. Ollie explains to his friends how oxygen makes fire bigger, while carbon dioxide extinguishes fire. Be sure to try the hands on science experiments in the back of the book. Discover for yourself how fire must have oxygen to survive.

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