1 To explain demand theory using a non- mathematical economic approach. Materials Needed: 1. Graph paper or a graphing tool. 2. Calculator (optional, for mathematical calculations). Instructions: 1. Introduction: Today, we will explore the fundamental concept of the demand curve and its graphical representation. 2. Concept Explanation: We'll start with the demand for smartphones as an example. The demand curve represents the relationship between the price (P) of a product and the quantity demanded (Q) by consumers, assuming all other factors remain constant. 3. Graphing Exercise: We have some data points for the demand for smartphones. Your task is to plot these data points on a graph and connect them to form a demand curve. We'll use the following data: - At a price of $500, the quantity demanded is 1,000 units. - At a price of $400, the quantity demanded is 1,500 units. - At a price of $300, the quantity demanded is 2,000 units. 4. Steps: - Label the horizontal axis as "Price (P)" and the vertical axis as "Quantity Demanded (Q)." - Plot the data points for each price-quantity combination. - Connect the points to create the demand curve. - Observe the shape of the curve and its slope. 5. Discussion: After drawing the demand curve, discuss its properties, focusing on the negative (downward-sloping) slope and the inverse relationship between price and quantity demanded.