Loss & Profit Calculation: Interactive Model

① This GeoGebra example demonstrates the relationship between cost, selling price, profit, and loss in a business transaction, with dynamic text and visual aids. ② Core math concepts include arithmetic operations, algebraic expressions, proportional reasoning, and simple logical conditions (profit vs. loss). It also touches on quadratic equations and trigonometry, possibly for auxiliary displays. ③ Construction highlights: numerous text objects (text1, text3, text4, etc.) display values and formulas; variables (a, b, c, cp, sp, p, lp, pp) represent cost, price, profit, etc.; sliders or input boxes allow parameter changes; GeoGebra's algebraic engine updates results in real time; a picture (pic1) and points (A, B) enhance visualization. ④ Suitable for middle school to high school students learning applied arithmetic, introductory algebra, or business math, and for teachers to demonstrate dynamic profit/loss scenarios, helping students grasp profit rate calculations and break-even points.