This learning resource focuses on understanding market dynamics through the lens of demand shifts driven by changes in consumer income. It utilizes the TRIBE model (Tastes, Related goods, Income, Buyers, Expectations) to explain how an increase in income, as demonstrated by a city-wide tax rebate, results in a rightward shift of the demand curve for electric scooters in Metro City. The resource includes a worked example illustrating the impact of this shift on equilibrium price and quantity, along with independent practice that prompts students to visualize and analyze the changes. Additionally, it invites students to consider the opposite scenario of an economic downturn, fostering critical thinking about market reactions.