The Spirometer can be used to perform a variety of tests related to air flow and lung volume. The sensor includes a removable flow head (22 mm ID/30 m...
Beautifully illustrated in full color and highly informative, these pocket-sized field guides show each specimen in its natural habitat along with a d...
This fun, thought-provoking learning experience uses 9 museum-quality casts to teach students about diversity in diet in the animal kingdom. Casts inc...