Search results for: “system”
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Photosynthesis Coloring
Students read short text passages and then color images to help them relate the textual information with the graphic.
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Deer: Predation or Starvation?
This activity asks students to calculate the population change (births – deaths) and then graph the number of deer and the number of wolves.
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Graphing Hand Span and Height
This exercise illustrates the difference between bar graphs and scatter plots and walks students through the process of representing data they collect.
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Investigation: How Does Exercise Affect Heart Rate
Design and conduct an experiment to measure the effect of exercise on heart rate. Aligned to NGSS standard on feedback mechanisms.
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Measuring Biodiversity Using Beans
Students analyze a community of beans (pinto, lima, navy) to determine the richness, abundance, and biodiversity index of two communities.
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Estimating Population Size: A Netlogo Simulation
Students learn how the “mark and recapture” technique can be used to estimate population sizes by using a netlogo simulation that allows students to alter variables such as population size, and number of individuals marked.
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Calculate the Biodiversity Index of a Beach
This activity asks students to sort seashells and calculate the Simpson’s biodiversity index. The calculation is based on the number species in an area, dependent upon richness (number of unique species) and abundance (number of individual species).
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The Lesson of the Kaibab
This activity asks students to graph the number of kaibab deer on the plateau after predators were removed, then analyze data and develop a better plan.
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Color and Label the Nephron
Practice labeling the nephron with this reinforcement activity. Students can also color the image to identify the major structures of the nephron: glomerulus, bowman’s capsule, proximal and distal tubules, loop of Henle, collecting duct and capillaries. This was designed to go with a larger unit on how the urinary system and kidneys help the body…
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Niche Partitioning – Gorongosa Phenomenon
Explore niche partitioning in Gorongosa with this interactive graph and activity.
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Ecology Lesson on Trophic Cascades
This year I decided to change the way I teach the last unit of the year, which is ecology. Our textbook is really old, and not aligned to NGSS. The lessons followed a familiar “old-school” pattern: take notes mainly about definitions, do an activity or lab, then take a quiz. This year, I wanted to…
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Modeling the Alimentary Canal
In this activity, students use string to model the gastrointestinal tract as a scale model. I’ve noticed that students do have difficulty with the concept of scaling, which is one of the crosscutting concepts listed in the NGSS. The directions give students measurements for a 1/3 scale model, the human alimentary canal is about 9…
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Case Study: How Do Tibetans Survive High Altitudes
Based on the Berkeley website: Understanding Evolution, this version focuses on the how the body maintains homeostasis at high altitudes. This involves increased production of red blood cells to improve oxygen supplies to tissues. Tibetan populations have adapted to high altitudes by producing fewer red blood cells which improves fetal mortality rates. Case looks…
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Investigation: Gene Switches in Stickleback Fish
This activity was modified from HHMI’s “Modeling the Regulatory Switches of the Pitx1 Gene in Stickleback Fish” The activity is presented as a type of investigation or case study where students examine regulatory switches and was a short film that describes the role of the Pitx1 gene in the development of spines. Students can work…
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DNA, Proteins, and Sickle Cell
In this activity, students use a codon chart to compare the DNA sequence of HbA (normal hemoglobin) to HbS (sickle cell). The DNA differs in a single base, where the codon for normal hemoglobin codes for glutamine, and the mutant form codes for valine.