Reflex Math is an adaptive, game based program that helps students in grades 2 and up master addition, subtraction, multiplication, and division facts until they can recall them almost instantly. It is made by ExploreLearning and built around a fact family approach: instead of drilling one isolated fact, it teaches the related set together, such as 8 + 3 = 11, 3 + 8 = 11, 11 − 3 = 8, and 11 − 8 = 3. Children practise inside games on Reflex Island, the system adapts to each child, and a Green Light marks a successful day of practice. More than 15 million students have used it since 2011.
How Reflex Math works
Reflex is a fluency program, not a curriculum. It does not teach a new math idea from zero. It takes facts a child has already been taught and builds speed and accuracy until the answers come from memory. Each session follows a loop: the system picks facts the child has not yet mastered, teaches them through a short coaching activity, then practises them inside a game. As the child plays, Reflex watches every answer and adjusts which facts appear next, so the challenge stays at the right level.
Practice happens in fluency development games on Reflex Island. Children choose a game, answer facts to play, and earn rewards for effort and progress. After a child correctly answers a set number of facts in a day, a Green Light lights up in the corner of the screen, marking a successful day. Most children reach the Green Light in about 12 to 15 minutes of focused play.
The fact family approach
The fact family is the core teaching idea in Reflex. A fact family is a group of related facts that use the same numbers. For example, the numbers 5, 2, and 7 make the family 5 + 2 = 7, 2 + 5 = 7, 7 − 2 = 5, and 7 − 5 = 2. Teaching the family together shows the child the relationship between addition and subtraction, instead of asking them to memorise four separate answers.
Reflex introduces new facts with explicit strategies as well: the commutative property, rule based patterns, and visual models. The system then monitors each fact until the child answers it quickly and consistently, which is what fluency means. A child who needs to stop and think is not yet fluent, even if the answer is eventually right.
Grades and skills covered
Reflex is recommended for grades 2 and up, and it is used most in grades 2 to 4. The skills are sequenced by grade level standard:
| Grade | Skills covered |
|---|---|
| Grade 2 | Addition and subtraction facts to 20 |
| Grade 3 | Multiplication facts to 10 x 10, division facts to 10 |
| Grade 4 | Multiplication facts to 12 x 12, division facts to 144 |
| Grades 5 to 6 | Review and mastery of all four operations, fluency applied to fractions and decimals |
Reflex also supports students above grade level, at grade level, at risk, and with special needs, because the adaptive system sets the level per child rather than per class. A large district study of more than 35,000 students in grades 3 to 5 found that schools using Reflex frequently saw higher fluency rates, with students improving from an average starting fluency of 20.4 percent in grade 3 to 84.8 percent by the end of grade 5.
How to start
- Start the 30 day free trial from the Reflex site. Teachers can also apply for the ExploreLearning Grant Program, which gives full access to Reflex or Frax for a whole school year.
- Create a class and add students. The teacher dashboard sets the grade level and the facts each class works on.
- Students log in and play daily. Aim for the Green Light each day, which usually takes 12 to 15 minutes.
Teachers can watch fluency growth on the dashboard without extra marking, because the system tracks and reports progress automatically. Reflex pairs with Frax, the sister program for fractions, which is recommended for grades 3 and up and is best started before a fractions unit.
What Reflex Math costs
Reflex is a paid subscription, not a free tool. Home use costs about $35 to $65 per student per year and includes a 30 day free trial. School and district pricing is by quote, and it varies with the number of students. Before paying, check whether the school already has a license, and check the grant program for free classroom access. There is no free forever plan like the ones Delta Math and XtraMath offer, so the trial is the right way to test whether a child enjoys the games before committing.
Reflex Math vs Prodigy Math
Reflex Math and Prodigy Math both use games to build math fluency, but they aim at different things. Reflex is narrow and deep: it does one job, fact fluency for grades 2 and up, and it does it with an adaptive system, fact families, and a daily Green Light target. Prodigy Math is broad: a full adventure game for grades 1 to 8, with quests, battles, pets, and questions across the whole curriculum, where fluency is one benefit among many. A teacher who needs a class to master multiplication tables before state testing will pick Reflex. A parent who wants a child to enjoy twenty minutes of math practice across many skills will pick Prodigy. If you want the broad adventure explained, read what Prodigy Math is and who it is for, and for building a daily habit, see the Prodigy daily practice routine.
Frequently asked questions
Is Reflex Math free?
No. Reflex Math is a paid subscription, about $35 to $65 per student per year for home use, with a 30 day free trial. Teachers can apply for the ExploreLearning Grant Program for free classroom access for a school year.
How do students log in to Reflex Math?
Students log in through the account the teacher or parent created, using the username and password from that account. The teacher creates the class and adds students from the dashboard, and students then open Reflex from their own device.
What is the Green Light in Reflex Math?
The Green Light marks a successful day of fluency practice. After a student correctly answers a set number of facts in a day, the Green Light lights up in the corner of the screen. Most children reach it in about 12 to 15 minutes.
What grades is Reflex Math for?
Grades 2 and up, used most in grades 2 to 4. It covers addition and subtraction to 20 in grade 2, multiplication and division to 10 in grade 3, and to 12 in grade 4, with review and application in grades 5 to 6.
Does Reflex Math teach new math concepts?
No. It is a fluency tool, not a curriculum. It builds speed and accuracy on facts a child has already been taught, using fact families and adaptive games. It does not introduce new topics.
Related guides
This site is an independent guide. It is not the official Reflex Math or Prodigy site, and it is not affiliated with ExploreLearning or Prodigy Education.