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@burritopig
Great free resource
The free aspect of Stellar is great! Hope you don’t decide to change that :)
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AP Macroeconomics
AP Macroeconomics
Lesson 3.8: Financial assets
Interactive practice 48%
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Guided macro MCQ
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What happens to existing bond prices when interest rates rise?
A They rise because old bonds become more attractive.
B They fall because newer bonds offer higher returns.
C They stay fixed because a bond price never changes.
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Correct. If new bonds pay more, older bonds with lower payments become less valuable.
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Please plot the function, on the coordinate plane. You can plot the function by simply clicking two points that are on it.
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For the sentence below, please highlight the nouns yellow, the action verbs green, the prepositions blue, the conjunctions pink, and any adjective or participle purple.
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Write python code to find the
th fibbonacci number.
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Economics Guided Exercise
The price of Coke, the substitute of Pepsi has increased. How does this change in consumer preference affect the price and quantity of Pepsi? Please move the supply and/or demand curves to demonstrate this change and complete the sentence below.
After the increase of Coke's price, demand for Pepsi , and supply for Pepsi . The price of Pepsi and the quantity of Pepsi .
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1
AP® US History Stimulus SAQ
“In the late 19th and early 20th centuries, American foreign policy was primarily defined by the pursuit of expansionism, driven by a belief in American exceptionalism and a duty to spread democracy and capitalism around the globe. This era saw the United States engage in several conflicts and interventions, including the Spanish-American War of 1898, which not only resulted in territorial acquisitions like Puerto Rico and the Philippines but also marked a significant shift in the nation's identity as a global power. This aggressive foreign policy was justified by arguments of moral obligation, presenting the annexation of overseas territories as a benevolent act aimed at uplifting less fortunate nations, thus embodying a humanitarian facade coupled with economic interests.”
Source: John A. Thompson, historian, “The United States and the Age of Imperialism”, 2003
“Contrarily, the rise of American imperialism during this period can be seen as a hypocritical endeavor, masking underlying motives of economic exploitation and nationalistic fervor under the guise of moral superiority. Critics of this foreign policy argued that instead of liberating oppressed peoples, the United States sought to reproduce its own dominance in foreign lands for the benefit of American corporations and investors. The consequences of such policies were often detrimental, leading to unrest and resistance in the territories affected, as exemplified by the Philippine-American War, where the rhetoric of liberation was starkly at odds with the reality of subjugation and violence. This imperialistic approach not only contradicted the founding principles of liberty and self-determination but also illuminated the darker side of America's global ambitions, showing that the nation's self-image was often built on the subjugation of others.”
Source: David S. Mason, historian, “Imperialism and American Identity”, 2010
Using the excerpts, respond to parts a, b, and c.
a. Briefly describe one major difference between Thompson’s and Mason’s interpretations of American foreign policy in the late 19th and early 20th centuries.
b. Briefly explain how one historical event or development from 1865 to 1917 not directly mentioned in the excerpts could be used to support Thompson’s interpretation.
c. Briefly explain how one historical event or development from 1865 to 1917 not directly mentioned in the excerpts could be used to support Mason’s interpretation.
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3
AP® Human Geography No-Stimulus FRQ
The relationship between urbanization and social patterns has significant implications for both human behavior and policy planning.
A. Define urbanization in the context of human geography.
B. Describe ONE social impact of urbanization on family structures in urban areas.
C. Explain how urbanization can lead to the increased prevalence of social issues, such as crime or poverty.
D. Discuss how urban planning can address the challenges associated with rapid urbanization.
E. Explain the role of public transportation in influencing urban development and social equity.
F. Describe how suburbanization may impact the demographic characteristics of urban areas.
G. Explain the degree to which gentrification alters the cultural landscape of neighborhoods in urban settings. (Response must indicate the degree [low, moderate, high] and provide an explanation.)
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1
AP® Calculus BC No-Calculator FRQ
The temperature of a lake is modeled by a continuous and differentiable function, T(t), which measures the temperature in degrees Celsius at time t (in hours). The following table displays selected values of T(t) over a period of 8 hours.
| t (hours) | 0 | 1 | 3 | 5 | 8 |
|---|---|---|---|---|---|
| T(t) (°C) | 15 | 17 | 20 | 23 | 25 |
(a) Using a right Riemann sum with the intervals [0, 1], [1, 3], [3, 5], and [5, 8], approximate the value of the integral
. Show your calculations. What does this integral represent in the context of the problem?
(b) According to the Mean Value Theorem for Integrals, must there exist a time c in [0, 8] such that T'(c) equals the average value of T over that interval? Justify your answer.
(c) Using the average temperature calculated in part (a), estimate the total increase in temperature from t = 0 to t = 8. Provide the mathematical setup for your calculations.
(d) When the temperature of the lake is 25°C, the rate of change of the temperature is given by
. Calculate T'(8) and interpret this result in the context of the problem.
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2
AP® Computer Science Methods FRQ
This question involves the TemperatureRecord class, which records daily temperatures for a week. You will write two methods in the TemperatureRecord class that help analyze the temperature data.
public class TemperatureRecord {
/**
* An array that stores the daily temperatures.
* The size of the array is 7, representing the temperatures for a week.
*/
private int[] dailyTemperatures;
/**
* The constructor initializes the daily temperatures.
* @param temperatures An array of integers representing the daily temperatures.
* Preconditions: temperatures.length == 7
*/
public TemperatureRecord(int[] temperatures) {
dailyTemperatures = temperatures;
}
/**
* Returns the average temperature recorded for the week, rounded to the nearest integer.
* @return The average temperature.
*/
public int calculateAverageTemperature() { /* to be implemented in part (a) */ }
/**
* Returns the number of days with a temperature above the specified threshold.
* @param threshold The temperature threshold.
* @return The count of days with temperatures above the threshold.
* Preconditions: threshold >= -100 && threshold <= 100
*/
public int countDaysAboveThreshold(int threshold) { /* to be implemented in part (b) */ }
}
/**
* An array that stores the daily temperatures.
* The size of the array is 7, representing the temperatures for a week.
*/
private int[] dailyTemperatures;
/**
* The constructor initializes the daily temperatures.
* @param temperatures An array of integers representing the daily temperatures.
* Preconditions: temperatures.length == 7
*/
public TemperatureRecord(int[] temperatures) {
dailyTemperatures = temperatures;
}
/**
* Returns the average temperature recorded for the week, rounded to the nearest integer.
* @return The average temperature.
*/
public int calculateAverageTemperature() { /* to be implemented in part (a) */ }
/**
* Returns the number of days with a temperature above the specified threshold.
* @param threshold The temperature threshold.
* @return The count of days with temperatures above the threshold.
* Preconditions: threshold >= -100 && threshold <= 100
*/
public int countDaysAboveThreshold(int threshold) { /* to be implemented in part (b) */ }
}
(a) Write the calculateAverageTemperature method, which calculates the average temperature for the week. The method should add up all the temperatures in the dailyTemperatures array and divide by the number of days (7). If the sum is 0, due to initialization conditions, ensure it returns 0 as the average.
Class information for this question
public class TemperatureRecord
private int[] dailyTemperatures
public TemperatureRecord(int[] temperatures)
public int calculateAverageTemperature()
public int countDaysAboveThreshold(int threshold)
private int[] dailyTemperatures
public TemperatureRecord(int[] temperatures)
public int calculateAverageTemperature()
public int countDaysAboveThreshold(int threshold)
(b) Write the countDaysAboveThreshold method. This method iterates through the dailyTemperatures array and counts how many days have temperatures above the provided threshold. The count is then returned.
Consider the following examples:
| Input Temperatures | Threshold | Output |
|---|---|---|
| [70, 75, 80, 85, 90, 95, 100] | 80 | 4 |
| [60, 65, 70, 75, 80, 85, 90] | 80 | 3 |
| [0, -5, -10, -15, -20, -25, -30] | -10 | 2 |
Each input will be a valid set of 7 daily temperatures.
Complete the countDaysAboveThreshold method, ensuring that it iterates correctly through the dailyTemperatures array.
Class information for this question
public class TemperatureRecord
private int[] dailyTemperatures
public TemperatureRecord(int[] temperatures)
public int calculateAverageTemperature()
public int countDaysAboveThreshold(int threshold)
private int[] dailyTemperatures
public TemperatureRecord(int[] temperatures)
public int calculateAverageTemperature()
public int countDaysAboveThreshold(int threshold)
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3
AP® English Language Argument Essay
In a 2021 TED Talk, renowned author and philosopher Alain de Botton stated: "Our culture has created the illusion that the arrived-at life is a happy life. We believe that all we need to do is find our dream job, buy a house, or travel to exotic places, and we will be fulfilled. Yet true contentment comes from a deeper understanding of ourselves, our relationships, and the acceptance of life’s inherent challenges and uncertainties."
Write an essay that argues your position on the extent to which de Botton's claim about the pursuit of happiness and fulfillment is valid.
In your response you should do the following:
- Respond to the prompt with a thesis that presents a defensible position.
- Provide evidence to support your line of reasoning.
- Explain how the evidence supports your line of reasoning.
- Use appropriate grammar and punctuation in communicating your argument.
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@dylanh70607
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Love the UI, looks exactly like the AP thing. I love the feature of the 1/4, 1/3 test stuff. Also good.
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@tvisha
Super helpful & organized
Stellar being free is incredibly helpful and makes it a great resource for lots of students. The layout is simple yet organized. Thank you for putting in the time to make such detailed courses.
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@is_mishra
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Covers important APs
It has a good range of topics and includes important APs and competition questions for free! Really amazing.
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Easy to understand. I like the leaderboard because it instills some competition.
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Amazing math competition prep and infinite practice
I'm loving the infinite practice, and the hints. I've always found it difficult to practice for math competitions due to the difficult to navigate websites, but this website puts it all in one place.
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@alou
Feels like real AP material
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@coffeecreamer
Amazing all-in-one platform
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@thunderbee
Incredible free resource
I only started using Stellar yesterday evening and I'm absolutely taken aback by how amazing this website is. My favorite part is the variety of AP- Style MCQS- the conceptual ones are perfect for building understanding and the hard AP level questions are perfect for test prep or just for a fun challenge. Thank you so much, I'll definitely being using this website for all my AP classes!
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I love how it is so helpful and that it is completely free. Stellar gave me confidence when I go into my high school classes! The best part is that it is 100% free!!!!!!!
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@infinium
Y'all are santa for studying
I love the questions the teaching you even teach AP for free like you guys are like Santa for studying love y'all
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