CK-12 Foundation
Ck 12: Life Science: 7.7 Life Cycle of Seedless Vascular Plants
Discover the life cycle of seedless vascular plants.
CK-12 Foundation
Ck 12: Life Science: 4.11 First Cell
Learn about the first form of life on Earth, the cell.
CK-12 Foundation
Ck 12: Life Science: 2.20 Cell Cycle
Understand the life cycle of a eukaryotic cell.
CK-12 Foundation
Ck 12: Life Science: 2.1 Elements and Compounds
Learn how basic elements form molecules to support life.
CK-12 Foundation
Ck 12: Life Science: 1.5 Basic and Applied Science
Get an overview of applied science where people use and apply information obtained through basic science.
CK-12 Foundation
Ck 12: Life Science: 12.34 Mass Extinction
Discover how mass extinctions play a part in Earth's life history.
CK-12 Foundation
Ck 12: Life Science: 3.18 Cloning
Understand the science and ethics behind human or animal cloning.
CK-12 Foundation
Ck 12: Earth Science for Middle School
This digital textbook covers core earth science concepts and includes interactive features, real-world examples, videos, and study guides.
CK-12 Foundation
Ck 12: Life Science: 1.8 Characteristics of Life
Discover the five characteristics that all living things have in common.
Science Education Resource Center at Carleton College
Serc: Virtual Courseware for Earth and Environmental Sciences
The Virtual Courseware Project produces interactive, online simulations for the life science laboratory or for earth science studies. The activities are designed to enhance an existing curriculum and include online assessments. They can...
CK-12 Foundation
Ck 12: Life Science: 1.7 Safety in the Life Sciences
Review the safety precautions while performing scientific investigations.
CK-12 Foundation
Ck 12: Life Science: 4.9 Origin of Species
Understand how species develop and change over time.
CK-12 Foundation
Ck 12: Life Science: 12.14 Aquatic Biomes
Understand the living and nonliving aspects of aquatic ecosystems.
CK-12 Foundation
Ck 12: Life Science: 7.2 Plant Evolution
Discover the evolution and change of plants over time.
CK-12 Foundation
Ck 12: Life Science: 4.12 Geologic Time Scale
Understand the history of the Earth through geologic time.
CK-12 Foundation
Ck 12: Life Science: 4.10 Tracing Evolution
See how scientists trace species through their evolutionary relationships.
CK-12 Foundation
Ck 12: Life Science: 2.3 Cell Theory
Learn about the cell theory and levels of organization in a multicellular organism.
CK-12 Foundation
Ck 12: Life Science: 11.9 Organization of Living Things
Learn the system that scientists use to classify living things.
CK-12 Foundation
Ck 12: Life Science: 1.3 Scientific Method
Explore the process of doing scientific investigations.
CK-12 Foundation
Ck 12: Life Science: 12.20 Succession
Understand primary and secondary ecological succession, and their importance to ecosystems.
CK-12 Foundation
Ck 12: Life Science: 12.19 Energy Flow
Learn how energy is transferred along a food chain.