Inclusive by Design: How Mathseeds Supports Tier 2 Math Intervention in Canadian Districts

As a school district or board leader, do you know which of your Tier 2 math groups are actually closing gaps, and which are just filling a block on the timetable?

You're looking at dashboards and aggregate scores every week, if not every day. That bird's-eye view is excellent for tracking cohorts, but what it doesn't always show is whether one specific student, in one specific group, is actually responding to the targeted support they're getting.

Knowing whether the targeted support is working, has stopped working or never worked in the first place can be a blind spot for system leaders. And as provincial inclusion policies across most of Canada increasingly aim to keep students in the classroom with their peers rather than sending them elsewhere, it also raises the bar on what a board needs to be able to show: that the intervention is doing what it's meant to do. 

This is what a Multi-Tiered System of Supports (MTSS), or its precursor, Response to Intervention (RTI), is meant to solve. The framework structure comprises three tiers, with Tier 2 as the one where groups form, where support gets decided, and where a school finds out whether a student's ready to step back to Tier 1 or needs to move up to Tier 3.  

Susan Lozada, a school principal, found that kind of clarity after switching to Mathseeds, an evidence-based early math program built for K–3 classrooms.

"Mathseeds provides data that allows us to pinpoint what the gap skills are, so we can make decisions for students to accelerate their growth."

This article looks at how Mathseeds supports that kind of decision-making at every tier, with a particular focus on Tier 2.

The three tiers of MTSS and how Mathseeds supports each one

TIER 1: Universal instruction

Tier 1 is universal, supporting all learners, in a way that every student receives the same high-quality, explicit core instruction, and for roughly 80–90% of a class, that's enough on its own. This is prevention, not remediation; catching gaps before they form through universal screening rather than closing them after the fact.

Mathseeds works as a supplemental program at this level.

Its 200 sequential lessons use systematic, explicit instruction to build number sense, operations, geometry, measurement and problem-solving skills, with a curriculum-aligned crosswalk showing how Mathseeds maps to provincial and territorial standards.

A placement test starts every student at their own instructional level rather than a fixed grade-level entry point, so instruction stays personalized even at the whole-class stage.

Captivating animations, step-by-step models, and built-in rewards keep students motivated, while real-time reporting gives teachers a running view of how the whole class is progressing, not just whether lessons are being completed.

Tier 2: Targeted support

Tier 2 is where the answer to "is this working" gets tested.

It's small-group, targeted support for students who need extra help, layered on top of core instruction a few times a week. A student's response here determines whether they're ready to step back to Tier 1 or need to move up to Tier 3, which is why this tier carries so much weight.

In a typical Grade 2 classroom it could look like this: a teacher has pulled three students for a short session on place value, while the rest of the class works through their own Mathseeds lessons. No one gets a ‘bad at math’ label, and no one leaves the classroom either. That’s Tier 2 in an inclusive classroom, in practice.

For that support to work, the teacher needs to know exactly where those students are struggling and whether they're making progress, because knowing a gap exists isn't the same as knowing what it is. That's where the specific features of Mathseeds come in:

• Pinpoints the exact gap, not the label "behind." From individual student lesson performance to whole-school end-of-map quiz results, Mathseeds features a range of reporting types that highlight specific student struggles and inform next steps. 

• For Tier 2 support, the Skills Mastered report is particularly useful. It shows which students passed each skill on their first, second or third attempt – and which students haven’t yet passed. That makes it easy to see exactly where a student is struggling, whether that’s number sense, division or 2D shapes. A small-group session starts with a clear target instead of a vague sense that "math needs work." A teacher can group three students around the same missing concept instead of guessing who belongs together. 

• Reteaches foundational skills with the same rigour as first teaching. Guided, step-by-step instruction walks students back through a concept systematically, with more repetition and scaffolding than a single classroom pass usually allows. A student who hasn't locked in place value typically struggles with everything built on top of it, so Mathseeds goes back to that foundation rather than pushing forward around it. 

• Builds understanding concretely before it tests it abstractly. Interactive activities let students explore a concept visually and hands-on first. That scaffolding makes it possible to tell the difference between a student who's genuinely understood a concept and one who's only memorized a procedure. 

• Reinforces what the teacher just taught, in the same lesson. A teacher can explicitly teach a concept to a small group, then send students straight to Mathseeds for guided or independent practice on that exact skill while working with another group. The practice reinforces the teaching instead of introducing something new.

• Builds fluency alongside the reteaching. Short, sequenced Mental Minute sessions build fact fluency across addition, subtraction, multiplication, and division in the background, freeing up cognitive space for the more complex reasoning a Tier 2 group is usually working through. 

• Flags gaps early, at the group level and the individual level. Comprehensive, real-time reporting shows a teacher exactly where a student, or a whole intervention group, is struggling, so a corrective plan gets built around actual data rather than instinct, and can be adjusted mid-cycle rather than at the next formal assessment. 

• Keeps students motivated to keep showing up. Built-in rewards and age-appropriate, engaging activities keep Tier 2 students, including those who've lost confidence in math, willing to put in the extra practice, which matters when the whole point of Tier 2 is consistent, sustained effort over weeks, not a single good session.

Using data to drive decisions and engagement to keep students showing up for the extra work – that’s what targeted support can look like with Mathseeds.

Tier 3: Intensive support

Tier 3 is the most intensive layer: individualized, often daily, and usually through close collaboration with a math specialist or learning support teacher rather than in place of one. Only a small number of students, generally under 5%, need this level of support.

While Mathseeds doesn't replace that specialist relationship, it helps extend it through:

• Highly structured, sequential lessons that target specific mathematical gaps. Teachers can assign customized learning paths so a student works on prerequisite skills instead of grade-level content, with transparent feedback that lets them evaluate a wrong answer and try again without stigma. 

• Granular, real-time progress data lets a specialist monitor response to intensive intervention between sessions, rather than waiting for the next formal review. And because Mathseeds fits into intensive intervention blocks, one-to-one sessions, small groups, classroom rotations, or additional practice outside the regular math period, it works with whatever scheduling a school already has in place.

At Tier 3, the same data trail that flagged a gap at Tier 2 carries through, so a specialist starts with a clear picture instead of a blank one. 

But why do it? The evidence behind a tiered support system

We've walked through how MTSS works for math, tier by tier. The next question is whether it actually moves the needle, both at the framework level and at the Mathseeds level.

Start with the framework. In Alberta, the Grande Prairie Public School Division rolled out a structured early numeracy intervention built around universal screening: daily small-group sessions, six-week cycles, and clear check-in points to decide when a student was ready to be discharged from support. Of the 431 students who went through it, 77% advanced to meet target scores in most numeracy sub-skills and moved out of targeted support entirely.

Ontario researchers have started framing early numeracy the same way the province came to see early literacy after its Right to Read inquiry: the calls for students to have a "right to calculate," just as they have a right to read, are on the rise and MTSS offers just the framework for turning that principle into practice.

Mathseeds-wise, according to the Thriving Study (November 2025), students using the program for short, focused, regular sessions each week achieved 93% of expected annual growth over the study period, with 86% quiz accuracy showing that skills were genuinely sticking. That's a meaningful result for a Tier 2 group specifically, where the whole premise is a small amount of consistent, focused time paying off.