Yes! Brilliant's math content maps to Common Core State Standards for Mathematics (CCSS-M). Our lessons cover key domains from grades 3-12 and support the standards' emphasis on conceptual understanding and problem-solving.
Coverage by domain
Brilliant offers hundreds of interactive lessons mapped to Common Core domains:
Grades 3-5:
- Number & Operations - Fractions
Grades 6-8:
- Ratios & Proportional Relationships
- The Number System
- Expressions & Equations
- Functions
- Geometry
- Statistics & Probability
Grades 9-12:
- High School Algebra
- High School Functions
- High School Number & Quantity
- High School Geometry
- High School Statistics & Probability
How alignment works
Definitions and terminology
Our content team uses mathematically correct definitions that align with CCSS-M. For example:
- A fraction is a multiple of a unit fraction constructed by subdividing a whole
- A percentage is a rate per 100 (example: we don't say 25% = 1/4, we say 25% of 80 = 1/4 × 80)
- Two numbers with the same magnitude and different signs are "opposites"
- Congruence is defined through rigid transformations
These precise definitions support the deep conceptual understanding emphasized in the standards.
Mathematical practices
Brilliant's interactive format naturally supports the Common Core's Standards for Mathematical Practice:
- Make sense of problems and persevere in solving them
- Reason abstractly and quantitatively
- Construct viable arguments
- Model with mathematics
- Use appropriate tools strategically
- Look for and make use of structure
Students engage with these practices through hands-on problem-solving rather than passive reading.
Representations and models
We use visual representations consistent with standards-based curricula, including:
- Double number lines for equivalent ratios
- Tape diagrams for percentages
- Number lines for operations with signed numbers
- Balanced scales for solving equations
These representations help students build intuition before moving to formal procedures.
Alignment considerations
Brilliant is a supplement, not a replacement: While our content aligns with standards, Brilliant is designed to complement your existing curriculum—not replace textbooks or classroom instruction.
Course structure differs from textbooks: Brilliant courses may span multiple grade levels or combine topics in ways that differ from traditional scope and sequence. This supports deeper exploration and connections between concepts.
Standards-plus content: We also offer enrichment topics beyond Common Core, like logic, computer science, and applied problem-solving. These extend learning for students ready for additional challenge.
Browse the full catalog
To see all available courses by subject area and grade level, visit our complete course catalog.
Getting alignment details
For a comprehensive lesson-by-lesson mapping of Brilliant content to Common Core State Standards, see our complete Standards Alignment Guide. This detailed reference shows every lesson and the specific standards it addresses, organized by Common Core domain.
For additional questions about standards alignment, contact educators@brilliant.org.
Ready to explore aligned content? Apply for Brilliant for Educators at educator.brilliant.org.