Interactive Learning
Mr. Janak's Math
Choose an interactive lesson to explore, play a game to practice your skills, or use a classroom tool.
Interactive Lessons
Learn step-by-step with math tools
Divisibility Rules
Learn how to tell if a number is divisible without using long division.
Prime Numbers
Identify prime and composite numbers by finding their factor pairs.
Multiplication Algorithm
Master the standard algorithm for multi-digit multiplication.
Add and Subtract Fractions
Add and subtract fractions by finding common denominators visually.
Fraction Division
Divide fractions and whole numbers using visual area models.
Volume Explorer
Build 3D shapes and pull them apart to see how volume is calculated.
Area & Perimeter
Change the size of rectangles to see how area and perimeter change.
Tax Zones
Analyze overlapping tax jurisdictions and community funding layers.
Math Games
Fun ways to practice your skills
Teacher Tools
Classroom management and review tools