Interactive resource
Adding unlike fractions
Arithmetic. Different denominators: find a common denominator, then add. Free interactive GeoGebra resource — adjust parameters in the browser.
Overview
Different denominators: find a common denominator, then add.
Explanation
Unlike denominators cannot add numerators directly — part sizes differ.
Steps: (1) common denominator (often LCM); (2) rewrite; (3) add like fractions; (4) simplify.
Example: 1/4 + 1/6 → 3/12 + 2/12 = 5/12.
How to use
Adjust both fractions; watch rewriting to equal-width parts, then the sum.