Accessible Equations in Quarto
Below are three common equations. Each section includes how someone might explain it aloud, followed by how a screen reader might explain it for the benefit of visually impaired users.
1 1. Kinetic Energy Formula
\[ KE = \frac{1}{2}mv^2 \]
Lecturer explanation:
“KE equals one-half m v squared.”
How a screen reader might differ:
The screen reader may include structural cues such as: > “K E equals the fraction one over two times m times v squared.”
This helps clarify the fraction and the exponent for non-visual users.
2 2. Quadratic Formula
\[ x = \frac{-b \pm \sqrt{b^2 - 4ac}}{2a} \]
Lecturer explanation:
“x equals negative b plus or minus the square root of b squared minus four a c, all over two a.”
How a screen reader might differ:
Screen readers typically add structural detail to aid comprehension: > “x equals the fraction with numerator negative b plus or minus the square root of b squared minus four a c, and denominator two a.”
This nested structure can be difficult to follow without visual layout, so screen readers emphasize the math syntax to avoid ambiguity.
3 3. Body Mass Index (BMI)
\[ BMI = \frac{weight\ (kg)}{height^2\ (m^2)} \]
Lecturer explanation:
“BMI equals weight in kilograms divided by height squared in meters squared.”
How a screen reader might differ:
Screen readers may read: > “B M I equals the fraction with numerator weight open parenthesis k g close parenthesis and denominator height squared open parenthesis m squared close parenthesis.”
This detailed reading ensures clarity for both the units and the exponent.
Accessible math ensures that learners of all abilities can follow complex ideas, especially when expressions involve fractions, exponents, or nested elements. Using MathJax or semantic markup helps screen readers deliver math content that is not just legible, but understandable.