Explains the theory of evolution, describing how animal species are believed to have developed from early bacteria, discussing the concept of adaptation and survival, and examining the structure of DNA.
Introduces students in grades five through eight to the similar characteristics all mammals share as well as the features that make them different, describing how they survive in different environments and why mammals are more advanced than other animals.
Discusses the crucial events that occur during birth, growth, maturation, and reproduction in the lives of various animal species; investigates the transformation of a milkweed bug from larvae to adult step by step; and examines the captive breeding program for endangered cats at the San Diego Wild Animal Park.
Examines the evolution, physical characteristics, behaviors, environments, and life cycles of amphibians, including frogs, toads, newts, and salamanders.
Examines the structure and history of Earth from the perspective of visitors from a distant galaxy, focusing on different types of soil, their formation, components, and conservation; and includes an investigation of the relationship between the size of soil particles and their permeability.
Examines the structure and history of Earth from the perspective of visitors from a distant galaxy, focusing on the sources, uses, and conservation of renewable and nonrenewable natural resources; features a visit to a geothermal plant; and includes an investigation of differentkinds of particles in the air.
Examines the structure and history of Earth from the perspective of visitors from a distant galaxy, focusing onhow fossils are found and what they reveal about the past; features a visit to the Petrified Forest National Park in Arizona; and includes an investigation of the characteristics required for an environment to preserve remains.
Examines the structure and history of Earth from the perspective of visitors from a distant galaxy, focusing on how earthquakes, volcanoes, water, and wind have shaped the planet's topography; looks at how Earth's surface is depicted on maps; shows how cartographers map the ocean floors; and includes a demonstration of how to make a simple topographic map.
Examines the structure and history of Earth from the perspective of visitors from a distant galaxy, focusing on the formation, eruption, and classification of volcanoes; looks at the difference between magma and lava; features a visit to Horseshoe Lake at Mammoth Mountain, California; and includes a demonstration of how tilt meters are used.
