AFactorTree

A power learning aid combining Coaching Calculators and Guides to help students master prime factorization, LCM and GCD along with modern methods for addition, subtraction, multiplication and division of numbers and fractions.

- Factor trees and prime factorization
- LCM by prime factorization and listing multiples
- GCD by prime factorization and listing divisors

Modern number pencil and paper methods :

- Addition with Partial Sum and Column
- Subtraction with Trade First, Count Down and Partial Difference
- Multiplication with Partial Product, Lattice and Box or Grid
- Division with Partial Quotient
- Standard algorithms

Modern fraction pencil and paper methods :

- Addition and subtraction in stacked or line format
- Multiplication
- Division