Skill: fraction-equivalence
Equivalent Fractions Lab
Drag the sliders and watch the bars. Match the shaded length on the second bar to the first — the matching is the math. Then test yourself with challenges.
Two bars, one amount
Bar A (target)
Bar B (yours)
Controls
Challenges
1. Match 3/4 on Bar B
Set Bar A to 3/4, then drag Bar B’s sliders until the shaded lengths match exactly.
2. Find three different-looking equivalents of 2/3
Press “Set Bar A to 2/3”, then match it on Bar B with three different denominators. Matches found: 0
3. Predict: does 5/6 have an equivalent with denominator 18? With 20?
Decide first, then check.
Denominator 18:
Denominator 20: