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CK-12 Foundation
Ck 12: Life Science: 1.3 Scientific Method
Explore the process of doing scientific investigations.
CK-12 Foundation
Ck 12: Fourth Grade Science: Life Science: Plant Reproduction
[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.
CK-12 Foundation
Ck 12: Fifth Grade Science: Earth Science: Water on Earth
[Free Registration/Login may be required to access all resource tools.] Discusses water and where it occurs on Earth, gives an overview of the water cycle, and explains how the ocean is an integral part of the water cycle and is...
CK-12 Foundation
Ck 12: Life Science: 12.17 Cellular Respiration and Photosynthesis
Explore the two complementary processes of photosynthesis and cellular respiration.
CK-12 Foundation
Ck 12: Life Science: 3.8 Transcription
Understand process of constructing an mRNA molecule from DNA is known as transcription.
CK-12 Foundation
Ck 12: Life Science: 2.15 Cellular Respiration
Learn about the process of cellular respiration in the human body.
CK-12 Foundation
Ck 12: Physical Science: Technological Design Constraints
[Free Registration/Login may be required to access all resource tools.] The technological design process is a step-by-step approach to finding a solution to a problem. Often, the main challenge in technological design is finding a...
CK-12 Foundation
Ck 12: Scientific Method (Basic)
[Free Registration/Login may be required to access all resource tools.] This is a basic introduction to the scientifice method that includes links to instructional videos, grade-level texts, interactive activities, and review materials.