Creating a BMI (Body Mass Index) calculator can be an exciting and educational project for exhibitions, science fairs, or school events. This simple yet informative tool helps assess whether an individual’s body weight is healthy for their height. Let’s break down how to create a user friendly BMI calculator and explore its educational benefits.
What Is BMI?
BMI stands for Body Mass Index. It is a simple formula that calculates the relationship between a person’s weight and height. The formula is as follows:
Materials Required
- Paper-Based or Poster Model:
- Chart paper
- Markers, pens, and rulers
- Printed tables showing BMI ranges
- Calculator
Related – balance-weighing-machine-school-project
Steps for a Paper-Based or Poster Model
1.Design the Chart:
Draw two columns: one for heights and another for corresponding healthy weight ranges.
2.Write Instructions:
Provide clear instructions on how visitors can manually calculate BMI using a calculator.
3.Include a Reference Table:
Show different BMI categories with ranges so users can easily interpret their results.
BMI Formula:
BMI = weight (kg) / [height (m)]^2
Alternatively, in the imperial system:
BMI = [weight (lbs) / height (inches)^2] * 703
The BMI value helps categorize individuals into different groups such as underweight, healthy weight, overweight, or obese.
| BMI Range | Category |
|---|---|
| Below 18.5 | Underweight |
| 18.5 – 24.9 | Normal Weight |
| 25 – 29.9 | Overweight |
| 30 and above | Obesity |
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