Описание
Students observe the passage of hundreds of thousands of years without leaving their desks! By creating desktop river models, students observe how rivers, canyons, deltas, and other geological formations change over time. The river models enable students to gain experience with concepts such as geological time, erosion, and pollution.
Детали книги
Формат
Мягкая обложка
Страницы
120 страниц
Язык
Английский
Опубликовано
янв 1, 1999
Издатель
GEMS
ISBN-10
0924886323
ISBN-13
9780924886324