[Free Registration/Login may be required to access all resource tools.] Looks at the seasonal changes in plants.

[Free Registration/Login may be required to access all resource tools.] Looks at the processes of sexual reproduction in flowering plants, including pollination, fertilization (seed production), seed dispersal, and germination.

[Free Registration/Login may be required to access all resource tools.] Discusses plants, their needs, and their importance, and describes the structure and function of roots, stems, and leaves.

Looks at ways plants and animals, including humans, can impact the environment in this learning module.

[Free Registration/Login may be required to access all resource tools.] Discusses plants, their needs, and their importance. The structure and function of roots, stems, and leaves are covered as well.

A module that explains what an ecosystem is and how energy and matter move through them. Students will look at the different roles of plants and animals and at ecological relationships in food chains and food webs.

[Free Registration/Login may be required to access all resource tools.] Discusses how flowing water causes erosion; describes how runoff, streams, and rivers change Earth's surface; and identifies features caused by groundwater erosion.

[Free Registration/Login may be required to access all resource tools.] Defines respiration, looks at structures of the respiratory system, and discusses breathing mechanisms.

[Free Registration/Login may be required to access all resource tools.] Discusses the parts and functions of the cardiovascular system.

[Free Registration/Login may be required to access all resource tools.] Introduces the function, systems, and purpose of the nervous system.

[Free Registration/Login may be required to access all resource tools.] Introduces learned behaviors and the different methods of learning.

[Free Registration/Login may be required to access all resource tools.] Describes how waves move through water.

[Free Registration/Login may be required to access all resource tools.] Discusses how waves cause erosion of shorelines, features formed by wave deposition, and ways to protect shorelines from wave erosion.

[Free Registration/Login may be required to access all resource tools.] Looks at how wind causes erosion, how sediments are deposited by wind, and ways to prevent wind erosion.

[Free Registration/Login may be required to access all resource tools.] Identifies causes and effects of landslides and mudslides and explains how slump and creep occur.

[Free Registration/Login may be required to access all resource tools.] Looks at mechanical and chemical weathering, agents of weathering, and gives examples of each type of weathering.

[Free Registration/Login may be required to access all resource tools.] Describes how continental and valley glaciers form, explains how glaciers cause erosion, and identifies landforms that are deposited by glaciers.

[Free Registration/Login may be required to access all resource tools.] Defines electric current and relates electric current to different materials (insulators and conductors).

[Free Registration/Login may be required to access all resource tools.] Describes the parts of an electric circuit and identifies electric safety features and how to use electricity safely.

[Free Registration/Login may be required to access all resource tools.] Discusses what a tectonic plate is and how scientists can recognize its edges, how the plates move by convection in the mantle, the three types of plate boundaries...

[Free Registration/Login may be required to access all resource tools.] Looks at how stratigraphy can be used to determine the relative ages of rocks, how unconformities occur, ways to match rock layers in different areas, and how...

[Free Registration/Login may be required to access all resource tools.] Explains how to find a location and direction on Earth's surface. Discusses topography and various landforms and how they form.

[Free Registration/Login may be required to access all resource tools.] Discusses what fossils are, how they form, and what scientists can learn from fossils.

[Free Registration/Login may be required to access all resource tools.] Understand and define probability in terms of ratios.