# how to make real life examples of real/rational numbers – math’s working model – tlm – | craftpiller

Real and rational numbers have numerous practical applications in various fields. Here are some real-life examples:

1. Measurement and Quantities:
• Length, area, volume, weight, and temperature are all represented by real numbers. For instance, the height of a building, the size of a plot of land, or the volume of a container.
2. Finance and Economics:
• Rational numbers are used in various financial calculations such as interest rates, loan terms, and investment returns. For example, calculating compound interest or determining the price-to-earnings ratio of a stock.
3. Cooking and Recipes:
• Recipes often call for measurements in fractions, which are rational numbers. For example, a recipe might call for 1/2 cup of flour.
4. Construction and Engineering:
• In construction, measurements such as lengths, angles, and areas are crucial. Rational numbers are used extensively in blueprints, calculations for material quantities, and determining load-bearing capacities.
5. Medicine and Health Sciences:
• Dosages of medications, blood pressure readings, and temperature measurements are all represented by real numbers. For instance, a prescription might specify taking 2.5 milligrams of a certain medication.
6. Statistics and Probability:
• In statistics, real numbers are used to represent data, calculate means, medians, and variances. Rational numbers are used in probability calculations. For example, in a 50% chance of rain, the probability is represented as 0.5, which is a rational number.
7. Sports and Fitness:
• Athletes’ performance metrics, such as running times, distances, and weights lifted, are all represented by real numbers.
8. Geometry and Architecture:
• Lengths, areas, and volumes of various geometric shapes are represented using real numbers. For instance, the dimensions of a room or the area of a garden.
9. Electronics and Engineering:
• In electrical engineering, measurements like resistance, current, voltage, and power are all represented by real numbers.
• Coordinates of locations on Earth are represented using real numbers. For example, the latitude and longitude of a city.
11. Timekeeping:
• Time is often represented in decimal or fractional form, making it a rational number. For example, 2.5 hours represents 2 hours and 30 minutes.
12. Transportation:
• Distances traveled, speeds, and fuel consumption are all represented by real numbers. For example, a car might travel at a speed of 60 miles per hour.
13. Art and Design:
• Dimensions, proportions, and ratios in art and design are all represented using real numbers. For example, in graphic design, dimensions of images are specified using rational numbers.

## Real life examples of real/rational numbers – math’s working model

Creating a working model using color paper and cardboard to illustrate real-life applications of real and rational numbers is a creative and educational project. Here are some ideas for specific models:

1. Recipe Scaling Model:
• Create a cardboard kitchen scene with cutouts of ingredients (represented by color paper) and a recipe card. Use real and rational numbers to scale the recipe up or down.
2. Architectural Blueprint Model:
• Design a small cardboard house with labeled dimensions (in feet and inches). Use color paper for walls, roof, and details. Show how real and rational numbers are used in architecture.
3. Gardening Plot Model:
• Build a miniature garden plot with different plants represented by color paper. Label each with their spacing requirements (in inches or centimeters) to show how real numbers are used in gardening.
4. Construction Site Model:
• Create a construction site scene with workers, tools, and building materials. Use color paper to represent measurements for different elements (e.g., beams, bricks, pipes).
5. Temperature Conversion Model:
• Craft a thermometer out of cardboard and color paper. Use it to demonstrate how real numbers (in Fahrenheit and Celsius) are converted.
6. Nutrition Facts Model:
• Create a cardboard food product with a nutrition label. Use color paper to represent different nutrients (in grams, milligrams, etc.) to illustrate real and rational numbers in nutrition.
7. Gym Workout Model:
• Design a miniature gym scene with weights, exercise equipment, and workout routines. Label the weights with their masses (in pounds or kilograms) to show how real numbers are used in fitness.
8. Map and Scale Model:
• Craft a small town map with roads, buildings, and landmarks using color paper. Use a scale to demonstrate how distances on the map correspond to real-world distances.
9. Budgeting and Expenses Model:
• Create a mini wallet or cash register with color paper money (bills and coins). Use it to illustrate budgeting and managing expenses using real numbers.
10. Time and Schedule Model:
• Design a clock face using color paper and cardboard. Use movable hands to show different times, demonstrating real numbers in timekeeping.