Early Mathematics
Counting, comparison, number sense and the vocabulary children need before formal arithmetic. One focused hour a week, the right dose at this age.
- Weekly1 hour
- Per month$120
- Per class$30
Home / Programs
Programs
From counting to calculus, in one continuous path.
Year-long classes meet weekly from September through June. Summer courses run five weeks. Placement is by readiness, decided in a short conversation with the office.
School year classes
September through June
Tuition shown is the monthly figure across nine equal payments. Term and full-year figures are on the tuition page.
Elementary Mathematics
Arithmetic fluency built alongside real problem solving. Children work through word problems, explain their reasoning aloud, and learn that a wrong answer is information rather than a verdict.
- Weekly1.5 hours
- Per month$180
- Per class$45
Core Mathematics
The main track: fractions and ratios through pre-algebra, algebra and advanced high school topics. The sequence runs a step ahead of school, so class time is preparation rather than repair.
- Weekly2 hours
- Per month$240
- Per class$60
Geometry
Plane geometry taught through proof — construction, congruence, similarity and circles, plus the discipline of writing an argument in which every line follows from the one above it.
- Weekly1 hour
- Per month$120
- Per class$30
Algebra & Geometry
A combined three-hour track for students carrying both subjects at once, or moving into an accelerated high school sequence. The two reinforce each other when taught in the same room.
- Weekly3 hours
- Per month$360
- Per class$90
Calculus
Limits, derivatives, integrals and their applications, with the reasoning behind each kept intact. Suitable for AP Calculus AB or BC and for students heading toward engineering.
- Weekly2.5 hours
- Per month$300
- Per class$75
Test preparation
SAT & ACT Mathematics
Two and a half hours a week across the full school year. Spreading preparation over months rather than compressing it into a few weekends is the difference between recognizing a problem type and being fluent in it.
Students work through the content the tests assume, then the specific ways those tests ask about it — pacing, question structure, and the traps that cost points from students who understand the mathematics perfectly well.
Publicly reported results from former Zelta students include 780 and 790 on SAT Math and a perfect 36 on ACT Math.
SAT & ACT at a glance
- Grades10–12
- Weekly2.5 hours
- Per month$300
- Full year$2,700
- Per class$75
Private SAT/ACT tutoring is also available at $80/hour, or $55/hour semi-private.
One-on-one
Private & semi-private tutoring
For families who need a different pace or a specific subject. There's no registration fee for tutoring. Sessions are scheduled and paid in advance in blocks of four hours, and reduced rates apply to students already enrolled in a class.
| Format | Standard subjects | SAT/ACT, AP Calculus, AP Physics |
|---|---|---|
| Private — one student | $70 / hour | $80 / hour |
| Semi-private — two students | $41 / hour | $55 / hour |
Cancel or reschedule at least 24 hours ahead. Later changes are billed at one hour, except for weather closures or tutor availability.
Summer 2026
Five weeks, twice a week
June 29 through August 3, 2026. Short, focused courses covering grades 1–11, preparation for high school math, and contest-level mathematics. Classes are fun, engaging and effective over a short course.
| Course | Grades | Days | Time | Tuition |
|---|---|---|---|---|
| Kindergarten | K | Tue, Thu | 3:00–4:00 PM | $300 |
| Grade 1 | 1 | Mon, Wed | 3:30–4:30 PM | $300 |
| Grade 2 | 2 | Tue, Thu | 4:05–5:05 PM | $300 |
| Grade 3 | 3 | Wed, Fri | 4:30–5:30 PM | $300 |
| Grade 4 | 4 | Tue, Thu | 5:10–6:10 PM | $300 |
| Grade 5 | 5 | Mon, Wed | 4:40–6:10 PM | $450 |
| Grade 6 | 6 | Mon, Wed | 10:00–11:30 AM | $450 |
| Geometry | 8, 9 | Mon, Wed | 11:30 AM–1:00 PM | $450 |
| Intro to Algebra SSAT & ISEE | 7, 8 | Tue, Thu | 3:00–4:30 PM | $450 |
| Algebra I | 8, 9 | Mon, Wed | 2:00–3:30 PM | $450 |
| Algebra II | 9, 10 | Mon, Wed | 12:30–2:00 PM | $450 |
| HS Prep Geometry | 9, 10 | Mon, Wed | 11:30 AM–1:00 PM | $450 |
| Pre-Calculus | 10, 11 | Mon, Wed | 9:00–11:00 AM | $600 |
| SAT / ACT | 10–12 | Tue, Thu | 9:00–11:00 AM | $600 |
| AP Calculus AB & BC | 10–12 | Mon, Wed | 9:00–11:00 AM | $600 |
Summer tuition is non-refundable after the first class. Schedules for future summers are published each spring.
Competition math
Math Kangaroo
Zelta Learning Center is a registered host site for Math Kangaroo, the international mathematics competition for grades 1–12, and has had students named among Massachusetts winners. Contest-level classes also run in the summer program.
Let's find the right class for your child.
Tell us their grade and what they're working on in school. We'll suggest a starting point — honestly, even if that means waiting a year or starting with tutoring instead.