Dime Cuanto Pesa

by Shirley Willis

Published 1 December 1999



Dime Csmo Flotan Los Barcos

by Shirley Willis

Published 1 December 1999
Uses simple experiments and activities, to explore concepts such as density, upthrust, and water displacement; and to explain why objects float or sink.


Dime Que Hora Es

by Shirley Willis

Published 1 March 2000





Dime Qui Hora Es

by Shirley Willis

Published 1 December 1999



Text and simple illustrations provide explanations of the principles of flight.