Guides
Math guides for parents and students
Guides developed for Think-Nth families. No sign-up, no email wall — just the answers we give families on consultation calls.
For parents
How to choose an online math tutor
Nine questions that reveal teaching quality, safeguarding and whether progress will actually be measured — plus six red flags.
Read guideFor parents
How much does math tutoring cost?
2026 price tiers, what drives the rate up or down, and how to calculate the total rather than the hourly figure.
Read guideFor parents
Signs your child needs a math tutor
Ten early signals that a gap is widening, how to read a returned test paper, and three times a tutor isn't the answer.
Read guideFor students
The 12 gaps behind most low SAT math scores
A one-page checklist of the prerequisite skills that quietly cost points, with a two-minute self-test and a fix for each.
Read guideAlgebra explainer
Point-slope form: formula, examples and when to use it
The formula, how to derive it from two points, worked examples, and the sign errors that cost the most marks.
Read guideTopic library
Worked explainers by topic
Method, a full worked example, the mistakes that cost marks and how to check the answer — across algebra, geometry, statistics and calculus.
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