Simple experiments in time with everyday materials
de Muriel Mandell · Publicada por primera vez en 1997
Provides instructions for dozens of experiments designed to explore the wonders of time, each using simple supplies and materials.
de Muriel Mandell · Publicada por primera vez en 1997
Provides instructions for dozens of experiments designed to explore the wonders of time, each using simple supplies and materials.
Sterling · inglés
Sterling Pub. Co. · inglés
