Improve Your Grades with Acellus Tutoring

Find and fill the holes in your student's knowledge to help them succeed at school.

Over 250 Courses Available - Grades K-12


How Acellus Tutoring Works

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Select a Concept to Study

Students receive 24/7 access to complete courses that cover the concepts being taught at school. Students can jump to any lesson to get help with a particular concept.

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Learn from America's Greatest Teachers

Each concept is taught through video-based lessons featuring some of the greatest teachers in America. These instructors have expertise in explaining "hard to grasp" concepts and bring the subject material to life.

Watch Sample Lessons
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Practice with Interactive Problems

After watching a short video lesson, students practice each concept with interactive problems.

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Identify Holes in Your Knowledge

Acellus uses special problems to identify where a student has a hole in their background knowledge that is making it hard for them to learn a particular concept. This special type of a problem is called a "Swiss Cheese Problem" because it helps us find holes in a student's understanding.

Video: Swiss Cheese Problems
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Receive Personalized Instruction

Using the data gathered about the holes in a student’s understanding, Acellus provides custom personalized instruction to fill the gaps.

Watch Example Help Video
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Prepare for Success at School!

When students fill the holes in their understanding, they begin to develop a solid learning foundation that enables them to succeed at school and in life.

Read Success Stories

A Few Reasons Why Parents Love Acellus



Self-paced Learning
Students can work independently and receive personalized instruction to help them master each concept.


Live Monitoring
Watch your student's progress real-time from any mobile device or computer.


Automatic Recordkeeping
Acellus automatically compiles scores, progress, and hours worked into printable reports.

Watch Sample Lessons

Select the thumbnails below to view sample lessons from Acellus courses.



Grade K Math

Lesson: The Number 4
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Grade K Science

Lesson: Let's Feed the Birds
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Grade K LA / Reading

Lesson: Phonics: M Sound
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Grade K Social Studies

Lesson: Seasons
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Grade 1 Math

Lesson: Discovering Estimation
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Grade 1 Science

Lesson: What is an Antenna?
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Grade 1 LA / Reading

Lesson: People Nouns
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Grade 1 Social Studies

Lesson: Neighborhoods
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Grade 2 Math

Lesson: Two-Digit Subtraction
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Grade 2 Science

Lesson: Fossils
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Grade 2 LA / Reading

Lesson: Commands & Exclamations
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Grade 2 Social Studies

Lesson: Landmarks of the World
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Grade 3 Math

Lesson: Pizza Fractions
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Grade 3 Science

Lesson: Why Does the Sky Look Blue?
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Grade 3 LA / Reading

Lesson: Introducing Nouns
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Grade 3 Social Studies

Lesson: The Declaration of Independence
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Grade 4 Math

Lesson: Math Monster Mystery
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Grade 4 Science

Lesson: Sound Energy
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Grade 4 LA / Reading

Lesson: Inferring / Predicting
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Grade 4 Social Studies

Lesson: Cowboys & Cowgirls
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Grade 5 Math

Lesson: Using Fractions to Estimate
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Grade 5 Science

Lesson: Lab: Comet Cooking
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Grade 5 LA / Reading

Lesson: Presenting a Book Review
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Grade 5 Social Studies

Lesson: The Boston Tea Party
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Grade 6 Math

Lesson: Add Decimals
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Life Science

Lesson: Cell Pizza Lab
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Ancient Civilizations

Lesson: Oetzi - Iceman of the Alps
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Grade 6 Language Arts/Reading

Lesson: Poem Rhyme Rhythm
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Grade 7 Math

Lesson: Subtracting Integers
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Earth Science

Lesson: Lab - Speeding Around the Sun
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M.S. Geography

Lesson: Climate and Ecosystems
» Watch Lesson

Grade 7 Language Arts/Reading

Lesson: Questioning
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Physical Science

Lesson: What are Signs of Chemical Change?
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Grade 8 Language Arts/Reading

Lesson: Puns & Shakespeare
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FUNMath

Lesson: Circle Graphs
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Physical Science

Lesson: Law of Conservation of Mass
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H.S. English I

Lesson: The Gift of the Magi
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US History I

Lesson: Fighting Begins (Lexington & Concord)
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Algebra I

Lesson: Algebraic Expressions
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General Biology

Lesson: Cell Membranes
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H.S. English II

Lesson: Elements of Persuasive Speaking
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World History I

Lesson: Rise of the Roman Empire
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General Chemistry

Lesson: Scientific Notation
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American Literature

Lesson: Free Verse Poetry
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AP Calculus

Lesson: Polynomial Functions
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General Physics

Lesson: Magnetic Forces
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College Prep Eng.

Lesson: Sentence Structure
» Watch Lesson

US Government

Lesson: Domestic & Foreign Policy
» Watch Lesson

Browse Courses

Select the thumbnails below to view sample lessons from Acellus courses.

Mathematics:

  • Grade K Math
  • Grade 1 Math
  • Grade 2 Math
  • Grade 3 Math
  • Grade 4 Math
  • Grade 5 Math

Language Arts/Reading:

  • Grade K Language Arts/Reading
  • Grade 1 Language Arts/Reading
  • Grade 2 Language Arts/Reading
  • Grade 3 Language Arts/Reading
  • Grade 4 Language Arts/Reading
  • Grade 5 Language Arts/Reading
  • Discover English - Elementary Part I (ESL)

Science:

  • Grade K Science
  • Grade 1 Science
  • Grade 2 Science
  • Grade 3 Science
  • Grade 4 Science
  • Grade 5 Science

History/Social Studies:

  • Grade K Social Studies
  • Grade 1 Social Studies
  • Grade 2 Social Studies
  • Grade 3 Social Studies
  • Grade 4 Social Studies
  • Grade 5 Social Studies

Special Education::

  • Preschool-K Special Learning 1-SE*
  • Grade 1-2 Special Learning 2-SE*

*SE indicates that the course has been designed to meet the needs of special education students.

What Parents Are Saying About Acellus

Read the stories below to see how Acellus transforms learning for students.

About Acellus

Acellus is a computer-based learning system that has changed online education as we know it today. Acellus is the only online learning system that utilizes I2 (Intelligent Interaction), which technology enables it to cater the educational content to the individual skill set of each student through customized, personal instruction.

Acellus is the fastest growing learning system in America. The program is used by over one million students at over 2,000 schools in every U.S. state and around the world.

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