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  Title Copies
The way things work 
ISBN: 395428572 
The voyage of the Frog 
ISBN: 440403642 
The very busy spider 
ISBN: 399215921 
The University of Georgia Geometry and Measurement Project 
The truth about Columbus : a subversively true poster book for a dubiously celebratory occasion 
ISBN: 1565840089 
The Super Source: Tangrams (Grades 5-6) 
The Super Source: Pattern Blocks (K-2). 
The Super Source: Cuisenaire Rods (Grades 3-4) 
ISBN: 1574520040 
ISBN 13: 9781574520040 
The Super Source: Color Tiles (Grades K-2) 
ISBN 13: 9781574520002 
The Super Source: Color Tiles (Grades 5-6) 
ISBN: 1574520024 
ISBN 13: 9781574520026