Quantica
Algebra I
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Prealgebra
Learn Prealgebra by solving, not memorizing. Work real problems with instant feedback and Sprout, a tutor that helps you find the answer yourself.
12chapters
70lessons
$0to start
What you'll learn
The full Prealgebra path. Every lesson is a problem to crack, not a worksheet to grind.
Exponents
6 lessonsPrimes and Divisibility
6 lessonsWorking with Fractions
7 lessonsDecimals
5 lessonsExpressions and Equations
5 lessonsRatios, Rates, and Proportions
5 lessonsSquare Roots
4 lessonsPercents
4 lessonsCounting and Statistics
8 lessonsGeometry
10 lessons- 11.1 Measuring Angles
- 11.2 Parallel Lines
- 11.3 Angles in Polygons
- 11.4 Measuring Segments
- 11.5 Perimeter
- 11.6 Area
- 11.7 Circles
- 11.8 The Pythagorean Theorem
- 11.9 Special Right Triangles
- 11.10 Families of Quadrilaterals
A Problem-Solving Toolkit
4 lessons- 12.1 Look for a Pattern
- 12.2 Make an Organized List
- 12.3 Draw a Picture
- 12.4 Work Backwards
How it works
01
Solve, don't memorize
Each lesson is a real problem. The idea emerges as you work toward it.
02
Guided, never spoiled
Layered hints and Sprout nudge you toward the answer without handing it over.
03
It sticks
Because you discovered it yourself, the next hard problem feels winnable.
Good to know
Is the Prealgebra course free?
Yes, you can start the full Prealgebra course for free, no card required.
Do I need any prior math knowledge?
No. Prealgebra starts from the rules of arithmetic and builds up, and Sprout is there whenever a problem stops you.
How is Quantica different from other prealgebra courses?
You learn by solving real problems with instant feedback and layered hints, so the ideas emerge from your own work instead of being memorized.
How long is the Prealgebra course?
It has 12 chapters and 70 lessons. You move at your own pace, in any order.