bythreedu · Ground Up Mathematics

From the
Ground Up.

Pre-Algebra through Statistics, sequenced as one program. Fixed pace, built-in breaks after every phase, and a capstone at the end of each subject.

Weeks95+ 6 break weeks
Lessons143across 6 subjects
Phases32 subjects each
Capstones6one per subject
What's included
A tracked program, mapped week by week.
Pre-Algebra · Practice
Simplify: 3(x + 4) − 2x
x + 125x + 12
Quiz Companion
Practice questions for every subject, with instant feedback on each attempt.
FormulasProblem Sets
Slope-Intercept Form:y=mx+by = mx + b
Quadratic Formula:x=−b±b2−4ac2ax = \dfrac{-b \pm \sqrt{b^2 - 4ac}}{2a}
Resource library
Formulas and problem sets organized by unit, added as each subject goes live, starting with Pre-Algebra and Algebra.
Week 1 · Phase 1 · Pre-Algebra
6 days until your next lesson
Mon · Watch: L1
Sun · Lesson day: L1 & L2
Daily Prep Assistant
A day-by-day plan for every week of the program built around this exact curriculum.
Booking code
DU-XXXXXX
Hi Jordan, your plan is ready.
Your own portal
Gated to your booking code: your plan, your progress, nobody else's. No account signup, just the code from your enrollment email.
On every phase
Included
Booked with your DU code · no extra charge
Live tutoring
Every phase includes weekly live sessions with a tutor, already built into the price.
New here? Start with the placement diagnostic
25 questions to find the right starting point before enrolling
→
Already enrolled? Open your daily plan
See this week's lesson and a day-by-day prep checklist
→
01The three phases

Each phase pairs two subjects that run back to back with a shared break after. Apply for the whole phase, or just one subject at a time — pricing and that choice live in the application, not up front.

Weeks 1–30 · 30 weeks
Phase 1 · Pre-Algebra + Algebra
Weeks 1–13
Pre-Algebra
Capstone: week 13▾
Weeks 14–30
Algebra
Capstone: week 30▾
Break · weeks 31–32
Weeks 33–60 · 28 weeks
Phase 2 · Geometry + Trigonometry
Weeks 33–48
Geometry
Capstone: week 48▾
Weeks 49–60
Trigonometry
Capstone: week 60▾
Break · weeks 61–62
Weeks 63–99 · 37 weeks
Phase 3 · Precalculus + Statistics
Weeks 63–81
Precalculus
Capstone: week 81▾
Weeks 82–99
Statistics
Capstone: week 99▾
02Questions
How do I find my DU code?+
How do I schedule weekly lessons?+
How do I see this week's plan?+
What happens during break weeks?+
How do I pay for Phase 2 and Phase 3?+