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Accelerated Grade 3 Mathematics

Prerequisites: Qualifying math score and completion of grade 2

Course Format: Individually Paced

Course Length: Typically 6 months

Course Code: AG3


This course is closed due to maintenance. We are temporarily not accepting new enrollments in this course.

Course Description


CTY’s Accelerated Math courses sharpen investigative skills, broaden mathematical understanding of concepts, and enhance reasoning skills. The Accelerated Grade 3 course covers topics typically found in a third grade curriculum and is aligned with Common Core Standards. The course starts with a review of topics taught in Accelerated Grade 2 Mathematics. Students are provided with ample practice, review problems, and activities. Online interactives in this course are provided by Houghton Mifflin Harcourt. Concepts are assessed through challenging homework assignments, quizzes, module tests, and cumulative exams. With the guidance of their instructors, students gain a solid foundation and mastery of math concepts at each level. This course provides a solid foundation of Grade 3 Mathematics and prepares students for success in Honors Grade 4 Mathematics.

Topics include:

  • Number Sense
  • Numbers as Factors
  • Prime and Composite Numbers
  • Two-digit Multipliers and Divisors
  • Improper Fractions and Mixed Numbers
  • Quotients and Remainders
  • Ratios and Percents
  • Decimals
  • Geometrical Figures
  • Coordinate Plane
  • Symmetry
  • Transformations
  • Data Analysis and Probability



Materials Needed

There are no required materials for this course.

List of Topics

Numbers and Number Sense

  • Whole Numbers to One Million
  • Ordering and Rounding Whole Numbers

Numbers as Factors

  • Finding Factors
  • Prime and Composite Numbers
  • Identifying Common Factors

Operations with Numbers

  •  Whole Number Sums
  • Differences Between Large Numbers
  • Two Digit Multipliers
  • Introduction to Long Division
  • Two Digit Divisors

Introduction to Fractions

  • Proper Fractions
  • Improper Fractions
  • Equivalent Fractions
  • Ordering and Rounding Fractions

Operations with Fractions

  • Sums Involving Like Denominators
  • Differences Involving Like Denominators
  • Working with Unlike Denominators
  • Finding Products
  • Quotients and Remainders

Introduction to Decimals

  • Tenths, Hundreths, and Thousandths
  • Ordering and Rounding
  • Ratios, Decimals, and Percents

Operations with Decimals

  • Adding Decimals
  • Subtracting Decimals
  • Multiplying Decimals
  • Dividing Decimals by Whole Numbers


  • Lines, Angles and Circles
  • Rectangles and Squares
  • Triangles
  • Converting Units
  • Measurement Tools, Units, and Precision

Coordinate Plane and Geometry

  • The Coordinate Plane
  • Symmetry and Transformations
  • Relating Two and Three Dimensional Shapes

Data Analysis and Probability

  • Displaying and Analyzing Data
  • Looking at Chance

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System Requirements

CTY Online Programs courses require a properly-maintained computer with Internet access and a recent-version web browser (such as Firefox, Safari, or Internet Explorer) with the Adobe Flash plugin. Students are expected to be familiar with standard computer operations (e.g. login, cut & paste, email attachments).

This course requires high-speed Internet access (such as Cable or DSL) for online lesson videos. Your browser will need to allow JavaScript, login cookies, and popup windows from,, and any other course web sites.

Sample Video Lecture

Sample Video

PS2 Sample Video