A Key Containing the Answers to the Examples in the Sequel to Intellectual Arithmetic

Colburn's First Lessons: Intellectual Arithmetic, Upon the Inductive Method of Instruction

Arithmetic Upon the Inductive Method of Instruction: Being a Sequel to Intellectual Arithmetic

An Introduction to Algebra: Upon the Inductive Method of Instruction

An Introduction to Algebra Upon the Inductive Method of Instruction

Arithmetic Upon the Inductive Method of Instruction: Being a Sequel to Intellectual Arithmetic

An Introduction to Algebra Upon the Inductive Method of Instruction

Colburn's First Lessons: Intellectual Arithmetic ...

Intellectual Arithmetic, Upon the Inductive Method of Instruction

Colburn's First Lessons: Intellectual Arithmetic, Upon the Inductive Method of Instruction

Colburn's First Lessons: Intellectual Arithmetic, Upon the Inductive Method of Instruction

Intellectual Arithmetic, Upon the Inductive Method of Instruction

An Introduction to Algebra upon the Inductive Method of Instruction

Intellectual Arithmetic: Upon the Inductive Method of Instruction

Arithmetic Upon the Inductive Method of Instruction: Being a Sequel to Intellectual Arithmetic

Intellectual Arithmetic: Upon the Inductive Method of Instruction

Arithmetic Upon the Inductive Method of Instruction: Being a Sequel to Intellectual Arithmetic

An Introduction to Algebra Upon the Inductive Method of Instruction

An Introduction to Algebra Upon the Inductive Method of Instruction

An Introduction to Algebra Upon the Inductive Method of Instruction