Group items tagged

A phylogenetic tree, also known as a phylogeny, is a diagram that depicts the lines of evolutionary descent of different species, organisms, or genes from a common ancestor. Phylogenies are useful for organizing knowledge of biological diversity, for structuring classifications, and for providing insight into events that occurred during evolution. Furthermore, because these trees show descent from a common ancestor, and because much of the strongest evidence for evolution comes in the form of common ancestry, one must understand phylogenies in order to fully appreciate the overwhelming evidence supporting the theory of evolution.

Imagine you swallowed a small bird and suddenly gained the ability to fly … or you ate a cobra and were able to spit poisonous venom! Well, throughout the history of life (and specifically during the evolution of complex eukaryotic cells) things like this happened all the time. Adam Jacobson explains endosymbiosis, a type of symbiosis in which one symbiotic organism lives inside another.

"What is Ambitious Science Teaching? Great teaching can be learned. This web site provides a vision of ambitious science instruction for elementary, middle school and high school classrooms. Ambitious teaching deliberately aims to support students of all backgrounds to deeply understand science ideas, participate in the activities of the discipline, and solve authentic problems. We feature 4 core sets of teaching practices that support these goals. These core sets make up the Ambitious Science Teaching Framework. The framework has been based on classroom research from the past 30 years-research that has asked, "What kinds of talk, tasks, and tools do students need in order to fully engage in meaningful forms of science learning?""

In this activity, students evaluate a science news article to determine whether it is a trustworthy source of information. Science news articles are a great way to learn about new ideas, discoveries, and research. However, it's important to evaluate the authority and credibility of sources of information.