Place value, addition & subtraction to 20, telling time, counting money — all taught by Lumi with voice-guided lessons that first graders can do on their own.
Start Free →Tens and ones, 2-digit numbers, expanded form
Facts to 20, doubles, make-a-ten strategy
Fact families, missing addends, word problems
Time to the hour and half hour on analog clocks
Identify penny, nickel, dime, quarter; count coins
Measure with non-standard units; compare lengths
First graders are still emerging readers — they shouldn't have to read math instructions to do math. Lumi speaks every problem aloud and waits for kids to tap their answer. Parents report their kids voluntarily open Lumi for "just one more lesson" because the format is genuinely engaging without being game-y or distracting.
First grade math's central new concept is place value — understanding that a two-digit number represents groups of tens and individual ones, not just "a bigger count." This is a genuine conceptual leap from Kindergarten counting, and it's the direct foundation for regrouping (carrying/borrowing) in 2nd and 3rd grade — a shaky place value foundation in 1st grade reliably causes regrouping confusion later, even when a child seems to be counting and adding just fine in the moment.
A common 1st grade math app mistake is teaching addition and subtraction within 20 purely through memorization of fact families, without building the underlying place-value model (tens and ones) that explains why the facts work the way they do — this can produce fast recall now that doesn't transfer well when regrouping is introduced in later grades.
Lumi's 1st grade math app builds place value understanding visually (using ten-frames and base-10 block models) before and alongside addition and subtraction fact practice, specifically to establish the conceptual foundation that regrouping in 2nd and 3rd grade depends on. Facts are practiced with the underlying model still visible, not as isolated flashcards, so the connection between the concept and the fact stays intact.
A typical Lumi 1st grade math session shows a two-digit number as physical ten-frames and ones before asking an addition question, keeping the place-value model visible throughout rather than switching to abstract digits alone. When a child answers a fact incorrectly, Lumi returns to the visual model to show why the answer works out the way it does, rather than simply providing the correct number — this keeps facts tied to understanding, which is specifically what prevents regrouping confusion from surfacing again in 2nd and 3rd grade. This visual grounding also makes it much easier for parents to help during homework time, since the same ten-frame and base-10 block models used in Lumi can be pointed to and referenced directly, rather than parents needing to explain place value using a completely different method than what the child sees in their lessons. Many families report that keeping this consistent visual language across both the app and any additional practice at home is what finally makes place value 'click' for a child who had been struggling with it as an abstract idea. The broader goal is a 1st grader who enters 2nd grade with a genuinely solid place-value foundation, since that's specifically what determines how smoothly regrouping concepts land the following year. Short daily sessions tend to work best here.
A complete 1st grade math app should cover place value (tens and ones), addition and subtraction within 20, telling time, counting money, and basic measurement and data — all included in Lumi's 1st grade math app.
Place value (understanding tens and ones) is the direct conceptual foundation for regrouping in 2nd and 3rd grade addition and subtraction — a shaky foundation here reliably causes confusion later, even if basic counting seems fine now.
No — Lumi builds visual place-value models (ten-frames, base-10 blocks) alongside fact practice, so facts stay connected to the underlying concept rather than being memorized as isolated, disconnected information.
Yes — Lumi's 1st grade math content aligns to Common Core State Standards benchmarks.
The full 1st grade math curriculum, plus printable workbooks and progress tracking, included in Lumi's flat $39.99/month family plan.
All topics. Voice-guided. Zero ads. Free 72-hour access — no card needed.
Get Started →