That is one pesky fly! Kids will love this funny and very accessible myth about the real-life historical figure who popularized the Cartesian system of coordinates. You won't believe how he did it!
Recognized as the father of analytic geometry, René Descartes was a French mathematician and philosopher. So how could a fly lead to an important math discovery? Read this imaginative Step 4 and find out!
Step 4 Readers use challenging vocabulary and short paragraphs to tell exciting stories. For newly independent readers who read simple sentences with confidence.
Richard Walz is the illustrator of many humorous historical Step into Reading books. He lives in Northampton, Massachusetts.
View titles by Richard Walz
That is one pesky fly! Kids will love this funny and very accessible myth about the real-life historical figure who popularized the Cartesian system of coordinates. You won't believe how he did it!
Recognized as the father of analytic geometry, René Descartes was a French mathematician and philosopher. So how could a fly lead to an important math discovery? Read this imaginative Step 4 and find out!
Step 4 Readers use challenging vocabulary and short paragraphs to tell exciting stories. For newly independent readers who read simple sentences with confidence.
Richard Walz is the illustrator of many humorous historical Step into Reading books. He lives in Northampton, Massachusetts.
View titles by Richard Walz
