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Journal Articles
The American Biology Teacher. 2020; 825333–337 doi: https://doi.org/10.1525/abt.2020.82.5.333
Published: 01 May 2020
... phylogenetic tree is as a set of nested hierarchies: trees can be rotated around any node and still depict the same evolutionary relationships. Teaching students to focus on the relative branching pattern of the tree helps emphasize that evolution is indeed a branching process, and that there is no single...
Includes: Supplementary data
Journal Articles
The American Biology Teacher. 2019; 818543–552 doi: https://doi.org/10.1525/abt.2019.81.8.543
Published: 01 October 2019
.... However, abstracted from the experience of nature's patterns, the tree metaphor, rather than being enlightening, can be ominous and confusing. In The Book of Trees , author Manuel Lima (2014) explains how the vertical and horizontal form of a tree – with roots, growing tips, nodes, and leaves – became...
Journal Articles
The American Biology Teacher. 2019; 816395–402 doi: https://doi.org/10.1525/abt.2019.81.6.395
Published: 01 August 2019
... to be guided by several approaches that Sandman (2016 , pp. 20–21) identified for overcoming your own biases: CHAT is primarily a barometer for tensions that arise within the different nodes of the activity system. For instance, “chalk-and-talk” approaches (see T, tools) would not support the...
Journal Articles
The American Biology Teacher. 2019; 816387–394 doi: https://doi.org/10.1525/abt.2019.81.6.387
Published: 01 August 2019
... cervical or axillary lymph nodes; muscle pain; multi-joint pain; new headaches; unrefreshing sleep; post-exertion malaise. + Table 2. The International Consensus Criteria ( Carruthers et al., 2011 ) require one symptom from each of the three categories shown here, in addition to post...
Journal Articles
The American Biology Teacher. 2019; 812133–136 doi: https://doi.org/10.1525/abt.2019.81.2.133
Published: 01 February 2019
... evolutionary relationships. It is also very hard. Without targeted instruction many students leave college courses unable to interpret even simple trees (e.g., Novick & Catley, 2007 ). For example, students often think that the order of terminal nodes in a tree indicates relatedness and so assume that two...
Journal Articles
The American Biology Teacher. 2019; 81140–46 doi: https://doi.org/10.1525/abt.2019.81.1.40
Published: 01 January 2019
... . https://marsed.asu.edu/node/105 . National Research Council ( 2012 ). A Framework for K–12 Science Education: Practices, Crosscutting Concepts, and Core Ideas . Washington, DC : National Academies Press . NGSS Lead States ( 2013 ). Next Generation Science Standards: For States, By States...
Includes: Supplementary data
Journal Articles
The American Biology Teacher. 2018; 809650–658 doi: https://doi.org/10.1525/abt.2018.80.9.650
Published: 01 November 2018
..., exploratory one of genomic data and nodes of departure for new species in the often difficult to grasp 4.5 billion year timeframe, stimulating interest in evolution, biodiversity, and phylogenetics. It can be further expanded and deepened by merging it with the hands-on processes and “slowed down” methods of...
Journal Articles
The American Biology Teacher. 2018; 805359–364 doi: https://doi.org/10.1525/abt.2018.80.5.359
Published: 01 May 2018
... . Retrieved from http://macroeco.lternet.edu/?q=node/13 NGSS Lead States . ( 2013 ). Next Generation Science Standards: For States, By States (Vols. 1, 2 ). Washington, DC : National Academies Press . Ryan, R. L. ( 2005 ). Exploring the effects of environmental experience on attachment to...
Includes: Supplementary data
Journal Articles
The American Biology Teacher. 2018; 802100–104 doi: https://doi.org/10.1525/abt.2018.80.2.100
Published: 01 February 2018
... the ancestor of another, it must occupy a branch or a node that is part of the direct lineage leading to the more recent species. Because the fossil record represents a small, nonrandom sample of the species that have existed, there is no way to determine whether any given fossil is collateral or...
Journal Articles
The American Biology Teacher. 2018; 802106–115 doi: https://doi.org/10.1525/abt.2018.80.2.106
Published: 01 February 2018
... Comprehensive Survey , Chicago . http://ncse.com/node/15049 Southerland, S. A. , & Scharmann, L. C. ( 2013 ). Acknowledging the religious beliefs students bring into the science classroom: Using the bounded nature of ccience . Theory Into Practice , 52 ( 1 ), 59 – 65 . http://doi.org/10.1080...
Journal Articles
The American Biology Teacher. 2018; 802144–151 doi: https://doi.org/10.1525/abt.2018.80.2.144
Published: 01 February 2018
... at the nodes (instead of diagonally drawn trees) increase students' comprehension ( Novick & Catley, 2007 ; Novick et al., 2012 ). Furthermore, psychological studies of phylogenies drawn with the common ancestor on the left and that appear to branch in a downward fashion is the format that...
Journal Articles
The American Biology Teacher. 2017; 799729–737 doi: https://doi.org/10.1525/abt.2017.79.9.729
Published: 01 November 2017
... , 16 . node A node B node C node D node A node B node C node D American alligators are more closely related to fire salamanders than red kangaroos. American alligators are more closely related to red kangaroos than fire salamanders. American alligators...
Journal Articles
The American Biology Teacher. 2017; 798668–670 doi: https://doi.org/10.1525/abt.2017.79.8.668
Published: 01 October 2017
... prompts: ancestry, branch, character, clade, classification, node, phylogenetics, relationship, root, species, taxon, and tree. Each of our chosen prompt words represents a different aspect of the nature of phylogenetic trees: conceptual, organizational, and structural. The chosen prompt terms should...
Journal Articles
The American Biology Teacher. 2017; 798645–653 doi: https://doi.org/10.1525/abt.2017.79.8.645
Published: 01 October 2017
... between the sinus venosus and the atrium is via the right side of the atrium. This is the first step toward the sinus venosus becoming part of the future right atrium (SA node). The bulbus cordis will eventually give rise to parts of the ventricles, while the truncus arteriosus will become the future...
Journal Articles
The American Biology Teacher. 2017; 792144–148 doi: https://doi.org/10.1525/abt.2017.79.2.144
Published: 01 February 2017
...: Packer et al., 2001 ). Additionally, discussion can focus on the types interactions among students (e.g., cooperation, arguing, scrounging) and the specific tasks of individuals (e.g., discussion leader, data collector, scribe) within nodes and how these behaviors relate to other species. Evolution...
Journal Articles
The American Biology Teacher. 2017; 79281–90 doi: https://doi.org/10.1525/abt.2017.79.2.81
Published: 01 February 2017
... analysis of molecular or morphological data to construct a tree. Students are instructed with an example to draw rooted bifurcated trees with nodes and the origin of traits indicated along the branches of the tree. No examples of unrooted trees are provided. Parts IV–VI have students comparing trees...
Includes: Supplementary data
Journal Articles
The American Biology Teacher. 2014; 762127–131 doi: https://doi.org/10.1525/abt.2014.76.2.10
Published: 01 February 2014
... . 2014 Phylogeny morphology parsimony clade cladistics polytomy synapomorphy Occam’s razor homoplasy homology node terminal node branch transition root natural taxon sister group out group References Elbroch, M. (2006). Animal Skulls: A Guide to North American Species...
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Published: 01 October 2015
explaining how lineages differentiate after nodes N1, N2, N3, and N4 (added by authors in red). Second, “plastic” and “furry” are emergent characteristics, and the tree as drawn suggests instead that “plastic toys” and “furry toys” are ancestors of all of the other toys. Figure 3. Scan of student-drawn
Journal Articles
The American Biology Teacher. 2016; 785380–384 doi: https://doi.org/10.1525/abt.2016.78.5.380
Published: 01 May 2016
... branches and that the internal nodes do not represent any sort of material “ancestors.” See more discussion of the definition of “cladogram” in Brower (2016) . What is a common ancestor, and how do we know about common ancestors? The first question, from a metaphysical realist perspective, is...
Journal Articles
The American Biology Teacher. 2016; 783241–247 doi: https://doi.org/10.1525/abt.2016.78.3.241
Published: 01 March 2016
... issue that will be addressed using the final phylogenetic tree. Additionally, one or more taxa that are closely related to the ingroup (aka, outgroup ) must be included in the dataset. The topological connection between ingroup and outgroup represents a special node in the tree that is termed the root...