What is Delta Math

Delta Math, written DeltaMath, is a free online math practice and assessment platform for students in grades 4 to 12. Teachers create assignments from a library of more than 2,500 problem types, students work through them in a browser with immediate feedback, and the system grades every answer automatically. It was built by a working math teacher, Zach Korzyk, who started it in 2009 as a practice program for the quadratic formula, and it now covers arithmetic through algebra, geometry, trigonometry, precalculus, calculus, and statistics.

How Delta Math works

Delta Math is a practice tool, not a full curriculum. The teacher teaches the topic first, then assigns a problem set on Delta Math. Each problem is generated with random numbers, so every student gets a different version of the same skill. When a student submits an answer, the platform marks it right or wrong at once and shows the correct working. Teachers can set how many correct answers a student needs, how many attempts are allowed, and whether a penalty applies for wrong answers.

Everything runs in the browser at deltamath.com. There is nothing to download or install, and it works on Chromebooks, tablets, and desktop computers. Students sign in with a username and password, or with Google sign in when the school has set that up.

Who Delta Math is for

Delta Math is built for middle school, high school, and introductory college math. The problem library covers grades 4 to 12, with the strongest coverage in algebra, geometry, trigonometry, precalculus, and AP Calculus. It is used by classroom teachers, homeschool families, and tutors. Teachers use it for homework, classwork, test corrections, and revision before exams. Students use it to practise a skill until they can answer it correctly on their own.

It is not a game. There are no wizards, pets, or battles. The reward is the score and the teacher’s feedback. That makes it a good fit for older students who want straight practice, and a poor fit for a young child who needs a game to stay engaged.

What is free and what costs money

The free teacher plan is genuinely useful. It includes unlimited assignments, unlimited student practice, the full library of more than 2,500 problem types, automatic grading, detailed student data, assignment sharing, and Google sign in. Most classroom teachers never need to pay.

There is also a Delta Math Home plan for families, listed at about $9.95 a month for one learner, with a seven day free trial. Before paying, check whether the school already holds a site license, because a school license covers the teacher and their rostered students.

How students join a class

Students do not create an account on their own. The teacher creates a class and shares a registration link or an eight character class code. The student goes to deltamath.com, clicks Log In, chooses Student, and enters the code during registration. The code links the account to that teacher’s roster, and the student’s assignments then appear on their dashboard, sorted into upcoming, completed, and past due.

If a student logs in and sees no assignments, the usual cause is a missing class code. The account exists, but it is not connected to any class. Ask the teacher for the code and use Join a Class on the dashboard.

How teachers use Delta Math

A teacher signs up at deltamath.com with an email address or a Google account, then creates a class for each period or group. For each assignment, the teacher picks a skill from the library, sets the required score, the penalty, the attempt limit, and the due date, and can filter by Common Core standard or grade level. After students work, the teacher sees every answer submitted, the time spent, and the most recent activity, and can export completion grades.

One feature teachers value most is test corrections. A student who got a question wrong on a test can redo a similar problem on Delta Math, and the teacher can save and reuse that correction setup for the next test.

Delta Math vs Prodigy Math

Delta Math and Prodigy Math serve different ages and different purposes. Delta Math is a straight practice and assessment tool for grades 4 to 12, built around teacher assigned problem sets and automatic grading. Prodigy Math is a fantasy adventure game for grades 1 to 8, where children answer math questions to win battles and finish quests. A high school algebra teacher who needs graded homework will pick Delta Math. A parent of a third grader who needs daily practice to feel like play will pick Prodigy. Many schools use both, one for homework and one for fluency practice. If you want the full picture of the game side, read what Prodigy Math is and who it is for.

Frequently asked questions

This site is an independent guide. It is not the official Delta Math or Prodigy site, and it is not affiliated with DeltaMath or Prodigy Education.