K–12 foundation
Mathematics
Build the number sense, arithmetic, algebra, geometry, data, and modeling skills that make financial literacy—and nearly every quantitative subject—easier to understand.
Current priority
Kindergarten through Grade 12 is now a live learning path.
Start with the Kindergarten foundation or jump to the grade level you need. Every live Math lesson includes explanations, worked examples, an interactive model, and at least 20 practice questions.
Numbers 0–5: Numbers Tell How Many
Connect the numerals 0 through 5 to actual quantities.
Counting Objects to 10
Count objects one time each and use the final count to tell how many.
Read and Represent Numbers 0–10
Match written numerals with quantities and positions on a number line.
One More and One Less
See how neighboring numbers are connected by adding or removing one.
Compare Groups: More, Less, or Equal
Compare two groups using counting and one-to-one matching.
Compare Written Numbers 1–10
Compare written numerals by connecting them back to quantities.
Number Pairs Within 5
Break a number into two parts in more than one way.
Addition Means Putting Together
Model addition by joining two groups and counting the combined total.
Subtraction Means Taking Away
Model subtraction by starting with a whole and removing part of it.
Make 10 with Ten Frames
Use a ten frame to see how many more are needed to make 10.
K–12 roadmap
A continuous math pathway.
High school courses vary by state and district, so Grades 9–12 are organized as a typical Algebra I → Geometry → Algebra II → Precalculus & Data sequence.
Build number sense with counting, comparing, composing numbers, early operations, measurement, and shapes.
Develop addition/subtraction strategies, place value to 100, measurement, data, and shape reasoning.
Build fluency with place value and operations while introducing money, measurement, graphs, arrays, and equal groups.
Establish multiplication/division, fractions as numbers, area, perimeter, measurement, and data interpretation.
Extend multi-digit arithmetic, fraction equivalence/operations, decimals, factors, measurement, and angles.
Master fraction/decimal operations, volume, coordinate graphs, numerical expressions, and patterns.
Transition into middle-school mathematics through ratios, rational numbers, expressions, equations, geometry, and statistics.
Use proportional reasoning, rational-number operations, equations, geometry, probability, and statistics.
Prepare for high-school algebra with real numbers, linear relationships, functions, transformations, geometry, and bivariate data.
Formalize algebra through equations, inequalities, functions, modeling, exponentials, quadratics, and introductory statistics.
Develop deductive reasoning through transformations, congruence, similarity, coordinate geometry, circles, trigonometry, and probability.
Extend functions and algebra to polynomial, rational, radical, exponential, logarithmic, complex, and trigonometric relationships.
Integrate advanced functions, modeling, trigonometry, vectors, matrices, statistics, and introductory calculus ideas.