To use a Purchase Order, please contact Leslie Silbernagel at email@example.com with a copy of your P.O.
The Science Education Council of Ohio (SECO) is a 501(c)3 non-profit organization.
SECO is the Ohio chapter of the National Science Teachers Association. Established since 1976.
Illustrations from WHEN I HEARD THE LEARN’D ASTRONOMER by Walt Whitman . Illustrations copyright © 2004 by Loren Long. Used by permission of Simon and Schuster Books for Young Readers, an imprint of Simon & Schuster Children’s Publishing Division.