Posts tagged market
Describe pricing and output policies in perfect competition and monopoly
May 13th
First, you need to find out answers to the following broad questions:
- What is perfect competition?
- What is a monopoly?
The video below is a very good starting point. You can ignore the early bit on costs.
Activity 1) Research how these two market types set their price and output. Can they control these two things (price and output)? If so, how? If not why not? Can you find simple diagrams to help explain these. Be careful though – this can lead to complex economics that is not needed for IGCES economics. You don’t need diagrams which include marginal cost, marginal revenue, etc, Check with your teacher if possible.
Activity 2): Create two collage images, made up of photographs you have found online, ideally those with a creative commons license (you are going to publish your collage online). one for perfect competition and one for monopoly to show a range of examples and characteristics of each type of market structure. As part of this, make sure you include images to help explain your answer to Activity 1. Ensure that the image size is maximum 5MB for each collage.
Activity 3): Sign up for an account at Thinglink. Upload your images and make them interactive, such that they reveal the key aspects of perfect competition and monopolies. Make sure you also include your answer to Activity 1.
The Effects of Price Controls
Oct 5th
This section of the IB syllabus requires you to understand the following:
- Maximum price: causes and consequences
- Minimum price: causes and consequences
- Price support/buffer stock schemes
Before learning about these concepts, it is first worth being sure of the following concepts:
- Consumer Surplus
- Producer Surplus
The rest of this post gives you links to online resources to help you become an expert in these concepts. Make sure you consult your text book(s) too, to provide further understanding.
Consumer and Producer Surplus
http://welkerswikinomics.wetpaint.com/page/Consumer+and+Producer+Surplus
Maximum prices and Minimum prices : causes and consequences
http://tutor2u.net/economics/revision-notes/as-marketfailure-maximum-prices.html (although you may not understand all of this yet – the bits on elasticity for example)
http://tutor2u.net/economics/content/topics/marketsinaction/black_markets.htm
http://www.fmhs.auckland.ac.nz/faculty/ltu/toni_ashton/supply-demand.swf [sections 7 and 8]
http://welkerswikinomics.wetpaint.com/page/Application%3A+Government-Set+Prices
Price support/buffer stock schemes
Supply and Demand Interacting – The Equilibrium Price
Sep 28th
Understand Demand? Understand Supply? Now we need both hands to clap, and when we put them together we can understand how prices are arrived at when market forces are left to their own devices (and also when they’re not). What Adam Smith called the invisible hand … you need to know this concept like the back of your own (not so invisible) hand.
Quite a lot of video tutorials on this fundamentally important economic concept.
Probably the best way to start (again) – take it away mjmfoodie:
Perhaps more detailed, jodiecongirl tackles market equilibrium:
But for an even deeper level of detail, here are two videos by richardmckenzie (note his tutorials are geared towards an MBA course!):
http://www.whitenova.com/thinkEconomics/supply.html
Now that you have hopefully grasped the fundamentals, it is worth checking your understanding further through these interactive tutorials:
http://hadm.sph.sc.edu/courses/econ/sd/sd.html
Notice that the above tutorial continues on to another page:
http://hadm.sph.sc.edu/courses/econ/sd/SD3.html
There are two good podcasts publishes by Biz/Ed which also include transcripts and possible questions:
Introducing Demand
Sep 13th
EXCEL spreadhseet to explore / predict how a demand ‘curve’ might work.
MJMFoodie video introducing demand:
Slideshow to prompt discussion / thought around the different variables that might move the demand curve. [IB students should know how this relates to the concept of ceteris paribus (look it up) and that changes in these variables are breaking the ceteris paribus assumption. IGCSE students need not worry too much about this.]
Link to original MS Powerpoint here.
If you need to review this, see the video on determinants of demand by jodiecongirl
These changes cause the entire demand curve to shift either to the left or the right.
MJMFoodie video on change in demand versus change in quantity demanded
Check the difference between “movements along" and “shifts of” the demand curve by exploring these interactive examples:
Changes to the Demand Curve at www.joehoy.com
You need to be really clear that demand is different from quantity demanded. This interactive tutorial by www.reffonomics.com should emphasise this even more:
The Difference Between Quantity Demanded and Demand
Also, jodiecongirl gives an excellent summary on changes in demand and shifts of the demand curve:
Once you think you have understood the concepts introduced above, here are some activities to attempt on line to check and consolidate your understanding.
Economics Interactive Tutorial by Sam Baker at the University of South Carolina
Visit this animation and explore it to answer the following questions:
http://www.bized.co.uk/learn/economics/markets/mechanism/interactive/demand1.swf
The diagram shows the amount consumers would like to purchase at a price of £5 (32) What happens in the following cases?
- Price rises to 8
- Price rises to 9
- Price falls to 3
- Price falls to 1
Explain why people may react in the way you have observed.
[Activity taken from http://www.bized.co.uk/learn/economics/markets/mechanism/interactive/part1.htm]
Markets
Sep 13th
What is a market?
View this slideshow to prompt discussion / thought about what the phrase ‘market’ can mean in Economics:
MS Powerpoint version of above: http://opengecko.com/resources/economics/markets/Markets.ppt
MJMFoodie introduces the concept of markets and explains the importance of the price mechanism (but does not yet explain how that actually works … that comes later ..,):
We now need to understand the structure of the market. We can say that there are different types of market which lie somewhere along a spectrum of market structures. There are two theoretical extremes to this spectrum (perfect competition and monopoly).
Again, a useful instructional video by MJMFoodie should provide guidance here:
Now see if you can apply your understanding from the above to the images in this slideshow:
MS Powerpoint version of above: http://opengecko.com/resources/economics/markets/Market%20Structure.ppt
