With the help of videos and photos, students conduct open-ended scientific investigations to discover how gravity and microgravity affect the life cycle and web design of orb-weaver spiders on the International Space Station.
In the following video students will learn how the environment impacts human health and the ecosystems around us, on both a small/local and large/global scale. [15:42]
This in-depth site provides middle and high school science teachers with a wide array of free instructional resources, such as slide sets, streaming video presentations, and laboratory activities. Information is provided that is supported by lessons and web-based materials.
Ecosystems are composed of all interacting organisms (biota) along with their physical and chemical environments. Physical aspects of an ecosystem, called abiotic components, include variables related to temperature, sunlight, soil, and other factors. [33:28]
In the following video you will learn how classification is a continually evolving scientific effort to group organisms based on knowledge gathered from different fields. You will also learn how it helps to define the relationships among organisms and between organisms and their environments. [12:01]
A biologist must be able to work with and understand a variety of mixtures. In the following video David Caprette, PhD, describes types of mixtures, and their properties, that might be encountered in a biological laboratory, and discusses basic equipment for solution making, terms and concepts related to formulas, and the concept of the mole. [25:04]
In the attached slideshow/video you will learn about the basics of genetic inheritance. Learn what determines the physical and biological characteristics of an individual organism, and how these traits are passed from one generation to the next. [19:05]
Mendel used experimental approaches to characterize a particulate model of inheritance. In doing so, he developed the three Laws of Inheritance. In this video/slideshow students will examine how Mendel made his important discoveries. [13:19]
A pedigree shows how a trait is inherited over several generations. This video/slideshow explains why pedigrees are important, and the key factors scientists consider when studying pedigrees. [24:30]
Water is unique among all liquids. In the following video David Caprette, PhD, discusses its remarkable properties and describes experiments to conduct with this common, crucial substance. [29:36]
In the following video, Evan Seimann, PhD, defines key terms and concepts of ecology, basic characteristics of populations, population age structures and densities, and explains the dynamics of growth models within a population. [22:59]
In this video David Caprette, PhD, discusses the types and properties of mixtures prepared and/or encountered in a biological laboratory. He also introduces basic lab equipment, terms and concepts related to formulas, and the concept of the mole. [33:24]
Earth's crust is altered by two closely related dynamic processes: the rock cycle and plate tectonics. In combination, these processes continually recycle and remodel Earth's solid surface, and reshape its oceans and rivers. [37:53]