Introduction
The Palengke Challenge: Smart Shopping for the Fiesta
Target Audience: Grade 7–9 Students
Subject: Mathematics (Consumer Mathematics, Percentages, and Unit Pricing)
Maligayang pagdating! Your family has been chosen to host the Barangay Fiesta dinner. Your parents gave you a budget of ₱5,000 to buy ingredients for three Filipino favorites: Chicken Adobo, Pancit Guisado, and Buko Pandan. Since prices in the palengke (wet market) and supermarkets change daily, you must use your math skills to find the best deals and stay within your budget.
Task
As the "Lead Procurement Officer," you must submit a Market Liquidation Report containing:
The Price Comparison: A table comparing prices of meat and vegetables from two different sources (e.g., SM Markets vs. a local Palengke price guide).
The Discount Calculation: Use "Sale" prices or bulk discounts to save money.
The Final Receipt: A breakdown of every item bought, including the total cost and the remaining change from your ₱5,000.
Process
Step 1: The Ingredient List. Research the standard ingredients for the three dishes. How many kilos of chicken and pork do you need for 20 guests?
Step 2: Price Research. Check the DTI (Department of Trade and Industry) Price Bulletin to see the "Suggested Retail Price" (SRP) for basic goods. Then, visit an online grocery like MetroMart to see supermarket prices.
Step 3: Apply the "Senior Citizen" Discount. One of your guests is a Lolo. Calculate a 20% discount and 12% VAT exemption on specific items like bread or medicines (a common PH math application).
Step 4: Final Liquidation. Add everything up. If you go over ₱5,000, you must adjust your quantities or find a cheaper brand.
Evaluation
Mathematical Accuracy: Are the unit conversions (grams to kilos) and additions correct?
Budgeting: Did you successfully stay under the ₱5,000 limit?
Contextual Application: Did you correctly apply the 20% discount/VAT math?
18–20 points: A (Math Wizard) – You managed the fiesta budget like a pro!
14–17 points: B (Smart Shopper) – Good deals found, just double-check the "sukli."
10–13 points: C (Budget Apprentice) – You survived the palengke, but watch those percentages.
Below 10 points: D (Needs Review) – Time to re-calculate before the guests arrive!
Conclusion
The Palengke Challenge serves as a powerful bridge between abstract mathematical concepts and the everyday realities of Filipino life. By navigating a ₱5,000 budget for a Barangay Fiesta, students move beyond simple arithmetic to master financial literacy, unit pricing, and taxation laws like the Senior Citizen discount. This WebQuest empowers learners to become savvy consumers, proving that math is not just a school subject, but a vital tool for making informed decisions and managing resources within their own homes and communities.