Limits & continuity
Building real intuition for what a limit means before the rules and shortcuts.
Calculus tutoring
Online Calculus Tutor — live, one-to-one, on Zoom.
Whether a student is catching up in a tough course or moving ahead into advanced material, Northstar offers personalized calculus coaching built around their class, pace, and goals.
$50 / 60 minutes · No contracts · No required packages · No charge for missed sessions
What calculus sessions can cover
Derivatives
Rules, the chain rule, implicit differentiation, related rates, and optimization.
Integrals
Antiderivatives, substitution, the Fundamental Theorem, area and accumulation.
Exam & course prep
Working through practice problems for upcoming quizzes, tests, and finals.
Precalculus gaps
Repairing the algebra, functions, and trig skills that make calculus feel harder.
College-level calculus
Support for university calculus courses and beyond.
Taught by a mathematics specialist
Northstar was founded by Joshua Lizardi, who holds an M.S. in Applied Mathematics, an M.S. in Data Analytics, a B.S. in Mathematics, and a Graduate Certificate in Applied Statistics, with 9+ years of teaching mathematics — including college and graduate-level instruction.
- Live one-to-one sessions through Zoom
- $50 per 60-minute session
- No contracts or required packages
- No charge for missed sessions
- Flexible scheduling
- Payment through Zelle
Ready to make calculus make sense?
Tell us what course your student is taking and what they need help with.
Book a Session