Explore the Fraction Builder: Compare, Add & Equivalent
Build two fractions with bars, circles and a number line, compare them, find equivalent fractions and add them. Free, no signup, runs in your browser.
- Free to use
- No signup
- Nothing to install
- Runs in your browser
Illustration. Open the tool for the real thing.
See it in action
The Fraction Builder: Compare, Add & Equivalent with sample data entered and the result showing.
What is the Fraction Builder: Compare, Add & Equivalent?
Build two fractions with bars, circles and a number line, compare them, find equivalent fractions and add them. It runs in your browser, so a change to a setting or a drag on an object shows up at once.
Cooking, measuring, money, music rhythms and construction all use fractions every day.
3 steps to your result
Open the tool and follow along. Nothing to install.
What you get
A fraction names equal parts of a whole: the denominator says how many parts, the numerator how many are shaded.
Equivalent fractions name the same amount, like 1/2 and 2/4.
Fractions on a number line show which is bigger.
Make 1/2 and use Make equivalent to see 2/4.
Compare 3/8 and 2/5 with the bars.
Add 1/3 and 1/4 and read the sum.
Used for
Pick one to see how it fits.
Math learners
Algebra, geometry, trigonometry and calculus students, teachers preparing demonstrations, and self-learners who want to see the maths move.
Try it freeTeachers
For teachers: project the Fraction Builder: Compare, Add & Equivalent Fractions on the board, let students predict the result, then run it together and test this: Compare 3/8 and 2/5 with the bars. For students: change one thing at a time and write down what changes.
Try it freeHow it compares
A plain look at this tool next to the usual alternative.
| This simulation | Textbook diagram | |
|---|---|---|
| Interactive | Drag, tap and change settings | Fixed picture |
| Install | Nothing to install | Not needed |
| Cost | Free to use | Depends on the book |
Questions people ask
How do you compare two fractions?
Compare their size on the bar or number line, or convert both to the same denominator.
What are equivalent fractions?
Different fractions with the same value, made by multiplying the numerator and denominator by the same number.
Is the Fraction Builder: Compare, Add & Equivalent Fractions free to use?
Yes. The Fraction Builder: Compare, Add & Equivalent Fractions is free, needs no signup or download and runs in your web browser. It is part of the Math group of AZRS simulations.
Does the Fraction Builder: Compare, Add & Equivalent Fractions work on a phone or tablet?
Yes. The Fraction Builder: Compare, Add & Equivalent Fractions takes touch input as well as mouse input, so you can use its 5 adjustable settings with a finger. A larger screen makes the controls and graphs easier to read.
How do I use the Fraction Builder: Compare, Add & Equivalent?
1. In the Fraction Builder: Compare, Add & Equivalent Fractions, use the controls to change First: numerator, First: denominator, Second: numerator, Second: denominator, Picture. The simulation reacts instantly. 2. In the Fraction Builder: Compare, Add & Equivalent Fractions, pick an option such as Bars, Circles to switch modes or load an example. 3. In the Fraction Builder: Compare, Add & Equivalent Fractions, press "Make equivalent", "Random pair", "Simplify both" to start, reset or change what is happening. 4. Start with this experiment: Make 1/2 and use Make equivalent to see 2/4. Drag any glowing handle, object or slider with your mouse or finger and the Fraction Builder: Compare, Add & Equivalent Fractions responds in real time. 5. Change one setting at a time and watch which readout moves, then compare it with this idea: A fraction names equal parts of a whole: the denominator says how many parts, the numerator how many are shaded.
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Try the Fraction Builder: Compare, Add & Equivalent now
Build two fractions with bars, circles and a number line, compare them, find equivalent. Free to use.
Try it free