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Inflation — Purchasing Power Over Time

Đối tượng: High SchoolThể loại: Economics

Mô tả

Illustrates how inflation erodes purchasing power over time through multiple visual metaphors: a shrinking coin, a bar chart showing how many goods $100 buys across decades, the rising CPI index, and the Rule of 72 applied to purchasing power halving at 3% annual inflation (~24 years).

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Inflation — Purchasing Power Over Time

Description

Illustrates how inflation erodes purchasing power over time through multiple visual metaphors: a shrinking coin, a bar chart showing how many goods $100 buys across decades, the rising CPI index, and the Rule of 72 applied to purchasing power halving at 3% annual inflation (~24 years).

Phases

# Phase Name Duration Description
1 Title & Hook 5s Title appears, brief explanation of inflation concept
2 Shrinking Coin 8s A coin (circle with $ symbol) visibly shrinks to represent eroding real value
3 Bar Chart 10s Bar chart: goods purchasable with $100 in 1970, 1990, 2010, 2024 — bars decrease
4 CPI Index 8s Line plot of the Consumer Price Index rising from 1970 to 2024
5 Formula 5s Display Real Value = Nominal Value / Price Index formula
6 Rule of 72 8s At 3% inflation, purchasing power halves in 72/3 = 24 years. Visual demonstration.

Layout

+-----------------------------------------------+
|       Inflation — Purchasing Power Over Time   |
|                                                |
|  [Coin shrinks]     [Bar chart: goods per $100]|
|                      1970: ████████████ 100    |
|                      1990: ████████     70     |
|                      2010: ████         40     |
|                      2024: ██           20     |
|                                                |
|  CPI: ^                              _______/  |
|       |                         ___/           |
|       |                    ___/                |
|       +--1970--1990--2010--2024-->              |
|                                                |
|  Real Value = Nominal / Price Index            |
+-----------------------------------------------+

Area Descriptions

  • Top: Title
  • Left-center: Animated shrinking coin phase
  • Right-center: Bar chart showing declining purchasing power
  • Lower-center: CPI line chart
  • Bottom: Formula and Rule of 72 text

Assets & Dependencies

  • Fonts: LaTeX / sans-serif
  • Manim version: ManimCE 0.19.1

Notes

  • Coin: gold circle with dollar sign, shrinks via animate.scale()
  • Bars: orange/red tones, decreasing in height
  • CPI line: blue, rising
  • Background: dark navy #1a1a2e
  • Rule of 72 text uses MathTex