Steven M. Reff
Economics Lecturer
University of Arizona
(2007 - 2016)
The 2015 University of Arizona
Five-Star Faculty Award
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Standard 3:  Consumer Choice:  Marginal Analysis, Part II
Week 3:  Consumer Choice, Supply and Demand
Estimated Learning Time:  4 to 6 class periods (45 min. each)
"In high school economics, Utility (total satisfaction) and Diminishing Marginal Utility (decreased
satisfaction from extra units) are introduced early, often in introductory chapters on consumer
choice or microeconomics (Unit 1-3), explaining how consumers maximize satisfaction by
balancing wants with limited budgets . . ."   Ask Google AI
1
Students' and Teachers' Testimonials
"In a high school economics course, the Law of Demand is taught very early . . . as a foundational
concept within microeconomics, often right alongside or just before the Law of Supply, forming the
basis for understanding how markets, prices, and consumer behavior work. "   Ask Google AI
2
Chapter 4:  Demand and Determinants of Demand
(Make sure you take the 3 multiple choice questions underneath the video.)
(Make sure you take the 3 multiple choice questions underneath the video.)
(Make sure you take the 3 multiple choice questions underneath the video.)
Quantity Demanded (Qd) vs. Demand (D)
Determinants of Demand, Part I
Determinants of Demand, Part II
Utility (Total Utility and Marginal Utility), I
Utility (Total Utility and Marginal Utility), II
Utility (Marginal Utility Per-Dollar Spent), I
Utility (Marginal Utility Per-Dollar Spent), II
Diminishing Marginal Utility
Chapter 3:  Marginal Utility vs. Total Utility and Utility Maximization
"in a traditional high school economics class, students absolutely need to know the demand curve
slopes downward, reflecting the Law of Demand (inverse relationship between price and quantity
demanded), which is a fundamental economic principle. They learn that as price goes up, quantity
demanded goes down, and vice versa, illustrated by the curve moving from the top-left to the
bottom-right on a graph with price on the vertical (y-axis) and quantity on the horizontal (x-axis). "   
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3
(3:13 minutes)
(3:20 minutes)
Reading Assignment -- Chapter 3:
Video Book -- Chapter 3:
Interactive Activities -- Chapter 3:
Marginal Utility vs. Total Utility
Utility Maximization
Reading Assignment -- Chapter 4:
Video Book -- Chapter 4:
Interactive Activities -- Chapter 4:
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Chapter 4:  Quantity Demanded (Qd) vs. Demand (D) and the Slope of the Demand Curve
Quantity Demanded (Qd) vs. Demand (D)
Chapter 4:  Demand, Determinants of Demand
Quantity Demanded (Qd) (10 questions)
Determinants of Demand (D) (9 questions)
Determinants of Demand (D) (8 questions)
Standard 3:  Law of Demand
"In high school economics, the law of supply teaches that as a product's price rises, producers
supply more (and vice-versa) due to profit incentives, illustrated by an upward-sloping supply curve
on graphs, distinguishing this from "quantity supplied" (a movement along the curve) and exploring
"determinants" (shifters)."   Ask Google AI
4
(Make sure you take the 3 multiple choice questions underneath the video.)
(Make sure you take the 3 multiple choice questions underneath the video.)
Reading Assignments -- Chapter 5:
Video Book -- Chapter 5:
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Stardard 3:  Law of Supply
Chapter 5:  Quantity Supplied (Qs) vs. Supply (S)
Chapter 5:  Supply and Determinants of Supply
Quantity Supplied (Qs) vs. Supply (S)
Determinants of Supply
Quantity Supplied (Qs) vs. Supply
Quantity Supplied (Qs) (10 questions)
Determinants of Supplied (S) (6 questions)
Determinants of Supply (S) (5 questions)
Interactive Activities -- Chapter 5:
Chapters 3 - 6:  Review Video on Supply and Demand (Silent Movie)
Reffonomics Baseball Rules
Reffonomics Baseball (Chapters 3 - 6) Supply and Demand
Review:  20 Multiple Choice Questions on Supply and Demand (Chapters 3 - 6)
Review:  25 Multiple Choice Questions on Supply and Demand (Chapters 3 - 6)
Chapter 6:  Simultaneous Shifts in Supply and Demand
Simultaneous Shifts in Supply and Demand
Simultaneous Shifts in Supply and Demand (Movable and Drawable Graphs)
News Article 1 with Simultaneous Shifts in Supply and Demand Interactive Graph
News Article 2 with Simultaneous Shifts in Supply and Demand Interactive Graph
"A standard high school economics course . . . does cover simultaneous shifts in supply and
demand (often called "double shifts"), teaching students to graph these scenarios and determine
if equilibrium price or quantity is certain or indeterminate. While basic lessons focus on single
shifts, more advanced topics or challenging problems introduce simultaneous shifts . . ."   
Ask Google AI
5
(Make sure you take the 3 multiple choice questions underneath the video.)
Reading Assignment -- Chapter 6:
Video Book -- Chapter 6:
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Standard 3:  Simultaneous Shifts in Supply and Demand
Interactive Activities -- Chapter 6:
"A standard high school economics course . . . does cover simultaneous shifts in supply and
demand (often called "double shifts"), teaching students to graph these scenarios and determine
if equilibrium price or quantity is certain or indeterminate. While basic lessons focus on single
shifts, more advanced topics or challenging problems introduce simultaneous shifts . . ."   
Ask Google AI
5
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Standard 3:  Review Supply and Demand
Interactive Activities -- Review Chapters 3 - 6:
NOTE:  Reffonomics Baseball can be played inside a classroom or all the questions in
the game can be answered individually as homework.
Standard 3:  Test Yourself on Chapters 3 - 6
"A high school economics first exam usually covers foundational concepts like scarcity,
opportunity cost, and the Production Possibilities Curve (PPC), along with the core principles
of supply and demand, market equilibrium, . . . the economic way of thinking, understanding
basic models, and how individual choices interact in markets."  Ask Google AI
6
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(Make sure you take the 3 multiple choice questions underneath the video.)
(Make sure you take the 3 multiple choice questions underneath the video.)
(Make sure you take the 3 multiple choice questions underneath the video.)
NOTE:  Play only 6 innings in this game, as innings 7 - 9 cover college-level economics.
Reading Assignment -- Chapter 4:
DIRECTIONS:  While reading the articles below, show what happens to the market using
the interactive supply and demand graph wherever you see the yellow highlighted
sentences inside each article.
You DO NOT have to VIEW the video links below if you read Chapter 3, but the videos
might be good "starter videos" for classroom instruction as a review AFTER the topic
has been taught.  

The 3 self-graded multiple choice questions located UNDERNEATH the YouTube video
tests students knowledge of the subject.