DeltaMath is a free online math practice platform used by teachers and students from elementary school through 12th grade. It offers over 2,500 skill-based exercises covering topics from basic arithmetic to calculus, with instant feedback and step-by-step solutions. Teachers create accounts, build assignments, and track student progress, while students work through problems at their own pace and get explanations when they answer incorrectly.
What DeltaMath Covers
The platform spans the full K-12 math curriculum. Teachers can filter content by grade level and topic, selecting from areas like fractions, algebra, geometry, trigonometry, statistics, and calculus. With more than 2,500 individual skills available, most standard math courses taught in middle school and high school are well represented. Elementary-level content covers foundational skills like number sense and operations.
Problems are generated dynamically, meaning each student sees a slightly different version of the same type of question. This makes it difficult to copy answers from a classmate and gives students repeated practice with the same underlying concept until they demonstrate mastery.
How Students Use It
Students access DeltaMath through a web browser, typically by joining a class their teacher has set up. Once logged in, they see their assigned work and begin solving problems directly on screen. As soon as an answer is submitted, the platform provides a detailed, age-appropriate explanation of how to solve that problem. This happens automatically, so students don’t need to wait for a teacher to review their work.
On the free version, students get written step-by-step solutions after each question. With a paid license (DeltaMath PLUS or INTEGRAL), students also get access to help videos that walk through the concept in a different way. These two layers of support, written explanations and video tutorials, are designed to let students work through confusion on their own before asking a teacher for help.
How Teachers Use It
Teachers are the primary account holders on DeltaMath. After creating a free account, a teacher can build assignments by browsing the content library and selecting specific skills. Assignments can be posted to entire classes, to small groups, or to individual students. Teachers also control when assignments go live: immediately, at a scheduled time, or staggered across different class periods so a morning section doesn’t spoil problems for an afternoon section.
The grading is automatic. Every problem is scored the moment a student submits an answer, and results flow into a teacher dashboard where you can see each student’s progress, scores, and time spent. Teachers can also choose how much help students receive during an assignment. Solutions can be shown after every answer, only after incorrect answers, only after correct answers, or not at all. Turning off solutions is common during tests or quizzes, while leaving them on works well for homework and practice.
For assessments, teachers can set a time limit in hours and minutes. Once a student opens a timed assignment, the clock starts. There’s also an option to lock students out of all other DeltaMath assignments until they finish the timed one, which helps prevent toggling between a test and a practice set. If a student has an accommodation requiring extra time, teachers can adjust the timer on a per-student basis without changing the settings for the rest of the class.
Students can also upload images or PDFs of their written work alongside their digital answers, which lets teachers see the process behind the final answer rather than just a correct or incorrect result.
Free vs. Paid Plans
The core of DeltaMath is free for both teachers and students. A free teacher account gives you access to the full problem library, assignment creation, auto-grading, and student data tracking. Students get written step-by-step solutions at no cost.
The paid tiers, called PLUS and INTEGRAL, add features aimed at schools and districts. The most visible student-facing upgrade is access to help videos alongside the written solutions. Paid plans also unlock deeper integrations with learning management systems and additional administrative tools. For a single teacher trying out the platform, the free version covers the essentials.
Learning Management System Integrations
DeltaMath integrates with Google Classroom, Canvas, Schoology, Infinite Campus Learning Suite, ClassLink, and Clever. These integrations let teachers sync class rosters, push assignments, and in some cases pass grades back to the gradebook without manual entry. The specific integrations available depend on which license tier a school or district has purchased. Google Classroom integration is the most commonly used, since many schools already rely on it for distributing and collecting work.
Who DeltaMath Works Best For
The platform is built around repetition and immediate correction, which makes it especially useful for skills that improve with practice: solving equations, simplifying expressions, graphing functions, working with fractions. It’s less suited for open-ended problem solving or written proofs, since the system evaluates specific numerical or algebraic answers.
Most DeltaMath users are in middle school or high school, where the content library is deepest. Elementary teachers can find material for younger students, though the selection is narrower. College students occasionally encounter DeltaMath in developmental or introductory math courses, but it’s primarily designed for the K-12 classroom. If you’re a parent seeing DeltaMath assignments come home with your child, the platform is free to access and the built-in explanations can help you follow along with what your student is learning.