15 Apps & Websites For Teaching Math Online [Updated]

The following list highlights platforms verified by ESSA standards, university research, and widespread adoption by educators from grade 3 through higher education.

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        <p>An online math and reading-focused learning platform that provides 1:1 learning, personalized lessons, and parent reporting. Before creating a study plan, this K-12 resource runs a diagnostic check to identify gaps, then appoints a specialized tutor to move the student toward advanced topics while following US educational requirements.
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        <h2 style="font-size: 1.5rem; margin-bottom: 10px; color: #000;">2. Zearn Math</h2>
        A top-rated digital curriculum built on Eureka Math. It holds <strong>ESSA Tier 1</strong> status for its proven ability to close achievement gaps through a mix of digital lessons and small-group instruction.
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        <h2 style="font-size: 1.5rem; margin-bottom: 10px; color: #000;">3. ST Math</h2>
        Created by the MIND Research Institute, this visual-first program uses spatial-temporal reasoning to teach math concepts without language barriers, making it ideal for ELL students and early learners.
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        <h2 style="font-size: 1.5rem; margin-bottom: 10px; color: #000;">4. IXL Math</h2>
        The industry standard for skill fluency. It provides a “Real-Time Diagnostic” that gives educators a precise snapshot of student proficiency across all state standards.
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        <h2 style="font-size: 1.5rem; margin-bottom: 10px; color: #000;">5. Desmos Classroom</h2>
        Beyond its famous graphing calculator, Desmos offers free, high-quality digital activities that encourage students to model math and share their reasoning with the class in real-time.
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        <h2 style="font-size: 1.5rem; margin-bottom: 10px; color: #000;">6. Khan Academy</h2>
        A non-profit providing a massive library of standards-aligned videos and practice exercises. Its new AI tutor, Khanmigo, offers Socratic coaching to guide students through difficult proofs.
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        <h2 style="font-size: 1.5rem; margin-bottom: 10px; color: #000;">7. WolframAlpha</h2>
        A computational engine essential for higher education (Grades 12-20). It provides step-by-step solutions for complex calculus, linear algebra, and differential equations.
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        <h2 style="font-size: 1.5rem; margin-bottom: 10px; color: #000;">8. Illustrative Mathematics</h2>
        A problem-based core curriculum designed to foster “learning by doing.” It focuses on constructing mathematical arguments and using precise academic language.
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        <h2 style="font-size: 1.5rem; margin-bottom: 10px; color: #000;">9. DeltaMath</h2>
        Preferred by middle and high school teachers for its rigorous approach. It features over 3,000 problem types with detailed, step-by-step explanations for every missed answer.
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        <h2 style="font-size: 1.5rem; margin-bottom: 10px; color: #000;">10. PhET Interactive Simulations</h2>
        University of Colorado Boulder’s research-based simulations. These allow students to “play” with variables in equality, fractions, and area models to see mathematical consequences visually.
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        <h2 style="font-size: 1.5rem; margin-bottom: 10px; color: #000;">11. OpenStax</h2>
        Rice University’s hub for peer-reviewed, open-source textbooks. It is a primary resource for college-level courses, offering high-quality texts for Calculus and Statistics at no cost.
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        <h2 style="font-size: 1.5rem; margin-bottom: 10px; color: #000;">12. Mathigon / Polypad</h2>
        Known as the “Mathematical Playground,” it provides advanced virtual manipulatives that allow students to explore geometry and number theory through tactile digital tiles.
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        <h2 style="font-size: 1.5rem; margin-bottom: 10px; color: #000;">13. GeoGebra</h2>
        A multi-platform tool for geometry, algebra, and 3D graphing. It is open-source and supported by a global community of math researchers and educators.
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        <h2 style="font-size: 1.5rem; margin-bottom: 10px; color: #000;">14. Youcubed</h2>
        Based at Stanford University, this site provides “low-floor, high-ceiling” tasks designed to promote a growth mindset and deep conceptual thinking in mathematics.
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        <h2 style="font-size: 1.5rem; margin-bottom: 10px; color: #000;">15. Art of Problem Solving</h2>
        The premier resource for advanced math students and competition preparation. It offers rigorous textbooks and interactive challenges for high-achieving learners.
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