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The American Biology Teacher (2017) 79 (7): 584–589.
Published: 01 September 2017
... hormone. The frequency of administration (e.g., compare every day with every second or third day). The timing within the growth cycle to get the effect (e.g., start hormone application at end of the fourth instar). The location where the hormone is applied. Additionally, interactions...
The American Biology Teacher (2014) 76 (5): 352–353.
Published: 01 May 2014
...Kim Spaccarotella; Roxie James Measuring plant stem growth over time is a simple activity commonly used to introduce concepts in growth and development in plant biology ( Reid & Pu, 2007 ). This Quick Fix updates the activity and incorporates a real-world application: students consider possible...
The American Biology Teacher (2012) 74 (9): 620–627.
Published: 01 November 2012
...Susan Wells Rollinson The growth of a pine tree is examined by preparing “tree cookies” (cross-sectional disks) between whorls of branches. The use of Christmas trees allows the tree cookies to be obtained with inexpensive, commonly available tools. Students use the tree cookies to investigate the...