Interactive resource
Percentage Bar Visualizer
Arithmetic. Interactive percentage tool linking percents, fractions, and decimals — ideal for early percent lessons.
Overview
A percent is “parts per hundred.” Bar models put 45%, 1/2, and 0.5 on one visual scale.
Explanation
A percent says what part of another number you have, with denominator 100.
Convert: p% = p/100 (fraction) = p ÷ 100 (decimal).
Think of the whole as 100 parts; p% takes p of them.
How to use
- Open the percentage scene.
- Adjust the percent and watch the bar fill.
- Compare fraction and decimal forms.
- Connect to discounts and accuracy rates.
Real-world tip
Use an 80% quiz score or a 50% sale to stress that percents are relative amounts.
Knowledge points
FAQ
How does this relate to fractions?
Percents convert to fractions; build part–whole with fraction bars, then move to percents.
Is this tool free?
Yes. It runs in the browser with no install.
Good for class demos?
Yes — project it and ask what changes when you drag a parameter.
How do I write the formula afterward?
Open the equation editor or symbol sheet and copy a clean expression.