Population Growth Worksheet Answer Key | Thank You For Loving Me Quotes And Messages

Wednesday, 31 July 2024

By altering these factors one at a time, and observing the results, students are able to clearly see the effect of each one. Students then talk with their peers and revote using their clickers. To conclude, students are given the opportunity to synthesize the concepts covered throughout the lesson. This activity can be used with any age student who can operate a computer and understands simple graphing. The questions can be grouped into four main categories that correspond with the parts of the lesson: 1) quantifying population size, 2) predicting population growth, 3) identifying and comparing growth rate, and 4) determining the influence of carrying capacity (Table 2). Growth Patterns: Put a few example graphs on the board, some of which show unusual or "impossible" patterns (such as a graph in which the population is larger than the actual size of an average Petri dish, and a graph that shows the population is declining below zero; see Figures 1 and 2) and some of which show standard logistic growth curves. Create your own human population growth curve utilizing the data below (Table 1). For PPTQ2, the most common incorrect answer on the post-test was D (24%), where the density was incorrectly written as "5 individuals" and abundance was written as "20 individuals per square meter. "

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Multiple-choice exam questions are provided in Supporting File S5: Exam Questions and Student Responses. If desired, the instructor can write these answers on a board and identify biotic versus abiotic factors. Based on the data above, between 1960 and the 21st Century, the human population ________? On the NSTA website, you can download this lab for free, however you must purchase the book in order to get the teacher pages and answer key. Definitions of 10 key population indicators with data comparisons between Japan and The Gambia. World Population Growth and Population indicators 2. The growth rate (or change in the population density) is: Students use a diagram of the three different growth curves (linear, exponential, and logistic) and infer how the growth rate is changing over time in each. PREDICTING AND PLOTTING POPULATION GROWTH (~10 MINUTES). The particular example compares the United States to Uganda, but many similar comparisons can be made using available data for other countries. It may seem strange to use a computer program for this, but in terms of reproduction, they behave identically to cell-based organisms; that is, they try to reproduce as much as possible given the limitations of their environment and their programming. The instructor first introduces the methodology used by Connell, 1961 (20) to study barnacle population growth in the intertidal zone (Supporting File S1: Lesson Presentation Slides with Instructor Notes, slide 11). A common error in making the graph is students do not space units properly on the axes. Use various approaches to communicate processes and procedures for using, maintaining, and assessing technological products and systems. After the introduction, distribute materials to the groups.

In this worksheet, students will create a graph of human population growth, use it to predict future growth, and identify factors that affect population growth. Population growth in the first 5, 000 years represented on the graph was extremely slow. In this way, they determine what happens as the population approaches carrying capacity (i. e., as N increases) (Supporting File S1: Lesson Presentation Slides with Instructor Notes, slides 26-28). Efforts to control population growth led to the one-child policy in China, which used to include more severe consequences, but now imposes fines on urban couples who have more than one child.

Do we have an obligation to try and save endangered species? Earth's human population is growing rapidly, to the extent that some worry about the ability of the earth's environment to sustain this population. Lesson Plan (DOCX) & Answer Key with Membership. We think students would benefit from more time focused on density-dependence to help them connect the concepts of density-dependence, carrying capacity, and logistic growth. Carry out the experiment shown in the Duckweed population growth experiment worksheet. Divide the class into teams of two students each, or larger groups if not enough computers are available. To reach its biotic potential, all females would have to become pregnant every nine months or so during their reproductive years. Assessments were based on the completed activity sheet.

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TEACHING DISCUSSION. This cartoon by Stuart McMillen is short, sweet, and easy to understand. Answer the following IB style questions about population growth curves. At both the introductory and advanced levels, students are asked to model population growth using graphs, measure population size, and estimate carrying capacity (9, 10). In regards to question number 4 and according to the graph the most dramatic rise in human population looks like it began about 1, 000 to 2, 000 years ago and has gradually increased especially within the last 100 years. Other skills goals for this activity. Students graph population estimates for years ranging from 1650 to 2012.

QUANTIFYING POPULATION SIZE. The instructor defines regulating mechanisms (those that influence population growth rate) and density-dependent regulation (which occurs when population growth rates are influenced by the density of the population). I describe the human population growth in the next 5, 000 years as a very fast change, thee graph shows a huge spike in the population especially in the last 500 years shown on the graph. I would say that the most static rise in population began roughly 200 years ago and it differs from the others in that the growth is ever increasing and exponential.

Students first answered individually ("think") followed by discussion with a neighbor and revote ("pair"). Letting P represent population size (N is often used in ecology instead) and t represent time, this model is formalized by the differential equation: where the constant r defines the growth rate and K is the carrying capacity. Education Standards. Activity 3 - IB Style questions on population growth curves. HUMAN POPULATION GROWTH VIDEO.

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Author(s): Elizabeth Trenckmann1, Michelle Smith1, Karen Nicole Pelletreau1, Mindi M. Summers2. Nigeria's population is projected to nearly quadruple and four other African nations are expected to enter the world's most populated countries-the Democratic Republic of Congo (DRC), Egypt, Ethiopia, and Tanzania. Many students were unable to input values for the variables and their attention focused on this skill rather than conceptually understanding the equation. Langin K, Sofaer H, Sillett S. Why study demography.. Accessed September 24, 2016. After instruction, students showed improvement on both PPTQ1 and PPTQ2 (Figure 2). If so, you should post it there, too. We also found that students could more easily make comparisons between points on the same growth curve than between points on different growth curves (Figure 2, PPTQ6-8).

And 3) identify if the graph most closely resembles linear, exponential, logistic, or other growth. Population Ecology and the Distribution of Organisms, p 818-844. Share your answers to two of the questions in the Question Area below. NGSS Performance Expectation|. The focus of this worksheet is for students to provide definitions for the vocabulary words and compare and contrast density-dependent factors and density-independent limiting factors. As a population size reaches the carrying capacity of its environment the rate of growth slows.

Combining peer discussion with instructor explanation increases student learning from in-class concept questions. The Ricker model is a classic population model which gives the expected number of individuals in a generation as a function of the number of individuals in the previous generation. Evaluate different models and assumptions made for predicting change in population. Now, set r=1 and K=20.

4: Explain why ecosystems can be relatively stable over hundreds or thousands of years, even though populations may fluctuate. Student performance on individual questions is discussed below. Big History Project. Since having a clear understanding of these two measurements is important, the instructor next gives students the opportunity to compare and calculate density and abundance. Currently, the three countries with the largest populations are... China. For EQ1, 75% of students who completed the activity answered correctly while 55% of students who did not complete the activity provided the correct answer.

Link to this Scatch project on the MIT site). Can you think of a reason for either of these instances of population drop or leveling off?

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