Subject
Mathematics lessons
Explore free interactive mathematics lessons covering arithmetic, algebra, geometry, statistics, and more. Each lesson features hands-on questions and instant feedback to help students build confidence and mastery at their own pace.
Most popular
The Line on the Floor — How do you split something fairly? (I cut, you choose)
25 questions · 14 min
The Short Order — Why does serving the quickest first make everyone wait less?
26 questions · 15 min
Three and a Bit — Why is pi 3.14, and what is pi actually measuring?
28 questions · 15 min
The Last Slice — How does "I cut, you choose" work, and how do you split something fairly?
13 questions · 12 min
Who Moved the Cake? — How do detectives solve a mystery by ruling out what can't be true?
18 questions · 12 min
Tornet till rymden — vad heter talet när man lägger till en nolla?
12 questions · 9 min
The Number That Wouldn't Share — What is a prime number, and why can't you split it into equal rows?
11 min
Vik till månen — Vad är exponentiell tillväxt?
7 questions · 7 min
Midsommar i snön — varför finns skottår?
14 questions · 7 min
Saftkiosken — Vad är proportionalitet?
13 questions · 4 min
Under noll: vad är negativa tal?
10 questions · 6 min
Hur många sätt?: Vad är kombinatorik?
12 questions · 6 min
Frequently asked
What math topics are available on Viafocus?
Viafocus offers lessons spanning arithmetic, fractions, algebra, geometry, statistics, probability, and calculus fundamentals. New lessons are added regularly by educators worldwide.
Are the math lessons free?
Yes. All interactive math lessons on Viafocus are free to access. Simply browse, pick a lesson, and start learning — no account required.
What grade levels do the math lessons cover?
Our math lessons range from elementary (grades K-5) through high school (grades 9-12) and university level. Each lesson indicates its difficulty and recommended grade range.