The EconModel applications on this web site all include a "Model Link" like the one for Supply and Demand. To download and install the EconModel program, click on activate the model links.

**Model Link:
Supply and Demand
<**activate
the model links>

The Supply and Demand application is both the central model in economics and the demonstration of how EconModel presents economic models. It includes four topics:

Clicking on a few links shows immediately how EconModel presents a model.

A quick review of some important points for first-time users.

**Related Models**

The Demand Curve can be derived from the
Two Goods - Two Prices Model, which is
another EconModel application. The basis for the Supply Curve is
the Perfect Competition Model of a
profit-maximizing firm.

Who Pays a Sales Tax? and The Cobweb Model and Inventory-Based Pricing illustrate how the basic supply and demand framework can be used to analyze specific problems.

A static model of supply and demand. This exercise concludes with an opportunity to work with a range of supply and demand price elasticities, providing some insight into how the slopes of the curves affect the model's properties.

A simple model with dynamic features illustrates the ways that EconModel is able to present dynamic models.

**Classic
Economic Models**

**Microeconomics**

**Introduction**

Overview of Micro Models

**Supply and Demand**

Basic Supply and Demand

Who Pays a Sales Tax?

The Cobweb Model and

Inventory-Based Pricing

**Theory of the Firm**

Perfect Competition

Monopoly and

Monopolistic Competition

Price Discrimination

The Demand for Labor

**Theory of the Consumer**

Two Goods - Two Prices

Intertemporal Substitution

Labor Supply, Income Taxes,

and Transfer Payments

**Macroeconomics**

**Introduction**

Overview of Macro Models

**Models in Chronological Order**

The Classical Model

The Simple Keynesian Model

The Keynesian IS/LM Model

The Mundell-Fleming Model

Real Business Cycles

The IS/MP Model

The Solow Growth Model

**Financial Markets
**
Utility-Based Valuation of Risk

Mean-Variance Analysis:

Risk vs. Expected Return

Fixed Income Securities:

Mortgage/Bond Calculator

Growth Investments:

Present Value Calculator

**Resources**