CK-12 Foundation
Ck 12: Third Grade Science: Life Science: Plant Reproduction and Life Cycles
[Free Registration/Login may be required to access all resource tools.] Read about the processes of sexual reproduction in flowering plants, including pollination, fertilization (seed production), seed dispersal, and germination.
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: Life Science: Cell Cycle
[Free Registration/Login may be required to access all resource tools.] The process of cell division in eukaryotic cells is carefully controlled. The cell cycle is the life cycle of a cell, with cell division at the end of the cycle....
PBS
Pbs Learning Media: Hummingbird Species in the Transitional Zones
This video segment from Evolution: "Darwin's Dangerous Idea" shows biologists Chris Schneider and Tom Smith studying hummingbirds and other animals in Ecuador. Their research is investigating the processes by which new species are formed.
Climate Literacy
Clean: Carbon Dioxide Fertilization of Marine Microalgae Cultures
In this experiment, students investigate the importance of carbon dioxide to the reproductive growth of a marine microalga, Dunalliela sp.
CK-12 Foundation
Ck 12: Life Science: Cloning
[Free Registration/Login may be required to access all resource tools.] Cloning is the process of creating an exact replica of an organism. The clone's DNA is exactly the same as the parent's DNA. Bacteria and plants have long been able...
City University of New York
Brooklyn College: Growth and Reproduction
This site from the Brooklyn College provides a brief, but good, explanation of the meaning of biological growth and how it relates to the process of reproduction.
CK-12 Foundation
Ck 12: Life Science: Meiosis
[Free Registration/Login may be required to access all resource tools.] Sexual reproduction combines gametes from two parents. Gametes are produced by a special type of cell division known as meiosis. Meiosis contains two rounds of cell...
Wisc-Online
Wisc Online: Lifecycles of Animals and Plants
This segment covers the lifecycles of various plants and animals. Illustrations begin with the production of a gamete and describe the processes that occur throughout the lifespan of living creatures.
BiologyWise
Biology Wise: Reproduction Process of Sea Urchins
Describes the physical characteristics of sea urchins and how reproduction takes place.
University of Michigan
University of Michigan: Viruses
This resource offers an outline of basic virus characteristics, including the reproductive process for viruses.
Dartmouth College
Dartmouth College: Viral Replication
This site provides an explanation of the reproductive or copying process of viruses. Images posted provide good supporting documentation.
ClassFlow
Class Flow: Life Cycles
[Free Registration/Login Required] Through this unit, children learn that plants and animals reproduce as part of their life cycle and that in every life cycle there are distinct processes and stages. They should begin to understand how...
PBS
Pbs Learning Media: Germinator
This ZOOMSci video segment teaches you how to germinate seeds in a plastic bag and helps you understand some of the factors that influence the germination process. [2:19]
Indiana University
Indiana University: Plants in Motion
Plants grow and change on a time scale that is too slow for us to observe in real time. Time-lapse photography is a simple technique that allows us to see the movements of plants and clearly demonstrates that plants are living and...
Alabama Learning Exchange
Alex: The Very Busy Students: Writing With Eric Carle
In this interdisciplinary unit addressing science and language arts standards, English Language Learners will learn the life cycle of insects. They will also use the writing of a renowned children's author, Eric Carle, as a model for...
BiologyWise
Biology Wise: Lytic Cycle
Explains what the lytic cycle of a virus is and the steps involved in the process.