Many digital assessment tools tell teachers whether a student answered correctly. Eedi aims to go further by identifying the misconception behind an incorrect answer.
This difference is central to the platform. An error such as choosing 12 instead of 18 may reflect a particular misunderstanding, an incorrect procedure or confusion about the underlying concept. If the teacher can see which misconception produced the answer, the assessment becomes more useful for planning what to do next.
In this Eedi review, I look at how its diagnostic questions work, what teachers can learn from the results and where the platform fits into mathematics teaching.
What Is Eedi?
Eedi is an online mathematics assessment and learning platform for students aged approximately 9 to 16. It includes diagnostic questions, quizzes, personalized interventions, retrieval practice and reporting tools.
Its content covers thousands of mathematics skills across several curricula. Teachers can create classes, assign quizzes and review automatically marked results.
Eedi’s main strength is its use of carefully designed multiple-choice questions. Each incorrect option is connected to a known misconception. The system therefore attempts to identify why a student answered incorrectly, not simply record that the answer was wrong.
Eedi also offers additional products, including its diagnostic engine, a classroom QR-response system and AI-supported tutoring. This review concentrates mainly on the school assessment platform used by teachers and students.
Eedi Features at a Glance
| Feature | What it does | Possible classroom use |
|---|---|---|
| Diagnostic Questions | Links incorrect options to specific misconceptions | Identify why students are struggling |
| Topic quizzes | Assess understanding across maths topics | Formative assessment and homework |
| Prerequisite quizzes | Check knowledge required for a new topic | Plan instruction before starting a unit |
| Retrieval quizzes | Revisit previously taught content | Support regular spaced review |
| Personalized interventions | Assigns follow-up instruction after errors | Provide targeted independent practice |
| Automated marking | Records results without manual grading | Reduce routine marking |
| Teacher reports | Shows performance and common misconceptions | Plan whole-class or small-group support |
| Student practice | Provides questions at different levels | Consolidation, practice and extension |
| Eedi Tutor | Uses guided dialogue after an error | Provide additional individual support |
| Rewards and progress tools | Encourages continued participation | Support regular practice routines |
How Eedi’s Diagnostic Questions Work
The platform’s assessment approach is built around Diagnostic Questions. These are multiple-choice mathematics questions in which each answer option has been designed deliberately.
One option is correct. The others reflect specific mistakes that students commonly make.
Suppose students are asked to compare two fractions. One incorrect option might reveal that a student believes the fraction with the larger denominator must always be larger. Another might suggest that the student is comparing only the numerators.
Both answers are wrong, but they point to different instructional needs.
Eedi says its learning-design team includes experienced mathematics teachers and tutors who develop and review these questions. The distractors are tagged to documented misconceptions and paired with explanations for teachers and students.
This makes the questions useful for whole-class discussion. Teachers can display a question, collect responses and ask students to explain why each option might appear reasonable. The task then becomes an opportunity to examine mathematical reasoning instead of checking answers alone.
Related: Math Manipulatives
Setting Up Classes and Assignments
Teachers can register for an account, create classes and add students. The platform also supports Wonde connections for automated class management where this service is available.
Once a class is ready, teachers can browse the content library and assign quizzes. According to Eedi, the platform contains tens of thousands of questions across multiple curricula.
Assignments can be planned through a calendar by week, term or longer period. Quizzes are marked automatically, and results become available in the teacher dashboard.
A simple workflow looks like this:
- Create a class and add students.
- Select a topic or mathematical skill.
- Assign a diagnostic, prerequisite or retrieval quiz.
- Review the results and identified misconceptions.
- Use the findings to adjust instruction.
- Assign follow-up practice where needed.
The value of the process depends heavily on the fifth step. Collecting misconception data has little educational benefit unless the teacher uses it to inform instruction.
Prerequisite Quizzes
Prerequisite quizzes assess the knowledge students need before beginning a new topic.
Before teaching linear equations, for example, a teacher may want to know whether students can simplify expressions, use inverse operations and work confidently with negative numbers.
The results can help the teacher decide whether to:
- Begin the planned lesson
- Review a prerequisite concept
- Provide a scaffold for selected students
- Create temporary support groups
- Adjust the pace of instruction
This is a useful application of diagnostic assessment because it identifies potential barriers before students encounter the new material.
Retrieval Practice
Eedi also includes retrieval quizzes that revisit previously taught content. Teachers can use these for lesson openings, weekly review or homework.
Retrieval practice is most useful when students must recall information or procedures from memory at spaced intervals. It should be low stakes and followed by feedback that helps students correct errors.
Eedi can automate the scheduling and marking, but teachers still need to examine what students are retrieving. Repeating isolated procedures is not sufficient if the learning goal requires explanation, application or mathematical reasoning.
Personalized Lessons and Interventions
When Eedi identifies a misconception, it can provide a personalized lesson intended to address that misunderstanding.
The support may guide the student through explanations, examples and follow-up questions. Eedi reports that its interventions resolve a high proportion of identified misconceptions, although this figure comes from the company and should be read as a product claim.
The educational idea is promising: two students who answer the same question incorrectly may receive different support because their selected answers indicate different misconceptions.
Teachers should still review the platform’s diagnosis. A student may select an option accidentally, guess or arrive at an answer through reasoning the system did not anticipate. A distractor can provide evidence of a possible misconception; it does not reveal the learner’s thinking with complete certainty.
Eedi Tutor
Eedi Tutor is an AI-supported mathematics tutor that activates after a student makes an error. The company describes it as a deliberately constrained system rather than an open-ended chatbot.
It uses structured, Socratic-style dialogue to guide students towards an answer. The intention is to keep the student thinking instead of immediately giving them the solution.
This is a meaningful distinction. An AI tutor that supplies an answer may help a student finish a question while providing little evidence of understanding. A guided conversation can ask the student to reconsider a step, explain a choice or apply a relevant concept.
Eedi Tutor draws on the platform’s misconception diagnosis to shape this support. Schools should examine the specific access plan, supervision arrangements and data policies before making AI tutoring part of routine student use.
Teacher Reports and Classroom Decisions
Eedi reports can show:
- Overall quiz performance
- Results for individual students
- Questions that caused difficulty
- Common misconceptions
- Misconceptions apparently resolved through interventions
- Students who may require additional support
- Progress across assigned work
These reports can support several instructional decisions.
If most of the class selects the same incorrect option, the teacher may need to revisit the concept with everyone. If a smaller group shares the misconception, targeted instruction may be more suitable. A single unexpected response may call for a brief conversation with that student.
Reports should guide teacher inquiry, not make the final decision. Assessment data is strongest when considered alongside students’ explanations, written work, classroom participation and previous learning.
DQR: Diagnostic Questions Without Student Devices
Eedi also has a product called DQR, which uses printed QR cards and a teacher’s phone or tablet.
Each student receives a unique card. They rotate it to indicate A, B, C or D, then hold it up while the teacher scans the room. The app records the responses and provides a breakdown of likely misconceptions.
This approach could be useful in classrooms where students do not have individual devices. It also allows a teacher to collect whole-class responses quickly during instruction.
As with any multiple-choice response system, students should sometimes be asked to explain their choices. The scan shows which option they selected; the explanation provides stronger evidence of how they reasoned.
Evidence Behind Eedi
Eedi reports that its school platform was examined through randomized evaluations conducted across two academic years. An independent evaluator identified statistically significant effects under some implementation conditions, and the platform received a Gold Efficacy certificate from EduEvidence.
The company’s account of the research is unusually open about the implementation problems. It reports that many teachers used Eedi mainly for homework, some students lacked reliable home access and curriculum alignment was a concern in participating schools. Results varied depending on how consistently schools incorporated Eedi into teaching.
Three conditions were associated with stronger implementation:
- Teachers acted on diagnostic information during lessons.
- Students had suitable access to devices and completion time.
- Schools developed regular routines and expectations for participation.
This is a useful reminder that access to assessment technology does not produce improvement by itself. The information must enter the teaching and learning process.
How Teachers Can Use Eedi
Before a unit
Assign a prerequisite quiz to identify missing knowledge that may block the new learning.
During instruction
Use one diagnostic question to reveal different ways students are thinking about a concept. Discuss why the distractors are tempting.
After a lesson
Assign a short quiz and examine the misconception patterns before planning the next lesson.
For retrieval practice
Build regular low-stakes review into weekly routines.
For targeted support
Group students temporarily according to the type of difficulty they are experiencing.
For homework
Assign independent practice, but provide access during school for students who lack suitable devices or internet connections at home.
Strengths of Eedi
The most useful aspects of the platform are:
- Diagnostic questions designed around common misconceptions
- More informative feedback than right-or-wrong scoring
- Prerequisite and retrieval quizzes
- Automatic marking and class reports
- Personalized follow-up support
- Content covering a wide range of mathematics skills
- Options for both device-based and QR-card assessment
- A constrained AI tutor focused on mathematical errors
Limitations to Consider
Eedi is focused on mathematics, so it is not a general assessment platform for every subject.
Its diagnostic approach also depends heavily on multiple-choice responses. Purposeful distractors can reveal likely misconceptions, but they cannot fully capture how a student constructed an answer.
Other considerations include:
- Content may not align perfectly with every curriculum or instructional sequence.
- Students need regular access to devices for much of the platform.
- Motivation may fall if Eedi becomes another routine homework system.
- Automated personalization still requires teacher oversight.
- Reports can be misinterpreted if a selected distractor is treated as definitive evidence.
- Some services, including live tutoring, require paid access.
- Teachers need time to act on the information produced.
The platform is likely to be most useful when diagnostic questions become part of classroom discussion and instructional planning.
Eedi Pricing and Access
Eedi states that teachers, students and parents can access its core platform for free. Eedi Plus adds tutor support and may be purchased by a school or offered through a parent-supported arrangement.
US schools and districts can also purchase site licences. The current US pricing page lists per-student annual plans for Eedi for All and Eedi Plus, with rates varying according to enrolment and the required professional-learning package.
Because prices and regional options can change, schools should consult the official Eedi pricing page for a current quotation instead of relying on a single published figure.
Final Thoughts
Eedi’s strongest feature is the design of its questions. Incorrect answers are treated as clues to students’ thinking, giving teachers a more useful starting point for intervention.
I would use the platform primarily for formative assessment: checking prerequisite knowledge, surfacing misconceptions during a lesson and planning targeted follow-up. Its reports and personalized interventions can support this work, but they should not replace conversations in which students explain their reasoning.
Eedi is a good fit for mathematics teachers who want diagnostic information they can act on. It will be less useful if quizzes are assigned routinely, completed as homework and never brought back into classroom teaching.
