Built for locking in, focus, understanding

The first VCE tutoring company to make maths interactive.

  • 50+ homework booklets
  • 1,000+ exam-style questions
  • 100+ animated concepts
  • 100+ interactive diagrams
  • 24/7 support on the student Discord

act one · 11:47 pm

The night before the SAC.

One question. Forty minutes. Still stuck.

11:47 pm???

act two · 1:23 am

The textbook explains it once. Badly.

Three textbooks, two forums and a 40-minute video later, nothing has clicked.

1:23 amTEXTBOOK AREVISION GUIDETEXTBOOK BPAST PAPERS“MADE SIMPLE”ANOTHER ONE40-min video…still lost.?????

act three · next morning

“We covered this in week three.”

So you stop asking. And start believing you're just not a maths person.

dy/dx = lim h→0 …∫ f(x) dx = F(b) − F(a)sin²θ + cos²θ = 1P(A|B) = P(A∩B)/P(B)z = r cis θ“We covered thisin week three.”?

act four · the click

Then, one night, the graph moves.

Drag the point. Watch the derivative follow it. Feel the idea snap into place.

drag the point — the derivative followsoh.OH.

act five · locked in

That click is why LockedIn exists.

Every lesson, booklet and diagram we make is built to cause it, again and again. By students who needed it too.

click!
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why lockedin

The first tutoring company to make the maths itself interactive

Booklets where the diagrams move, graphs that respond, and a worked interactive solution behind every homework question. The research below is why it works.

+6%

Average exam marks rise by about six percentage points when students learn actively instead of passively listening, across 225 published studies.

Freeman et al., “Active learning increases student performance in science, engineering, and mathematics”, PNAS 111(23), 2014.

0.47σ

Average performance gain on concept tests under active learning, in the same meta-analysis: nearly half a standard deviation, enough to lift a middle-of-the-pack student well clear of it.

Freeman et al., PNAS 111(23), 2014. Mean effect size on concept inventories: 0.47 SD across 225 studies.

2σ

Students tutored alongside mastery-based teaching performed about two standard deviations above a conventional class. The average tutored student beat 98% of it.

Bloom, “The 2 Sigma Problem”, Educational Researcher 13(6), 1984.

Small classes capped at five, one-to-one support on Discord, and a course where everything moves. The research above is the blueprint. LockedIn is the build.

sin(x)cos(x)f′(x) = 1.00

Move your cursor across the graph. Every concept we teach feels like this.

Full lesson demo ↓

The question 95% of the state scored zero on

This is what a LockedIn lesson actually feels like. We take the real question from the 2019 Methods Exam 2 — the one that decided the top study scores, recreated from the paper with the statewide marks from the official examination report — and instead of reciting the working, we think through it together. Watch how fast it falls once you can see it.

2019 · VCE Mathematical Methods · Written Examination 2

Section B · Question 5

Question 5f.

2 marks

Let f : R → R, f (x) = 1 − x3. The tangent to the graph of f at x = a, where 0 < a < 1, intersects the graph of f again at P and intersects the horizontal axis at Q. The shaded regions are bounded by the graph of f, its tangent at x = a and the horizontal axis.

Consider the regions bounded by the graph of f−1, the tangent to the graph of f−1 at x = b, where 0 < b < 1, and the vertical axis.

f. Find the value of b for which the total area of these regions is a minimum.

From the examination report

Marks012Average
%95140.1

“This question was not answered well. Many students attempted the second method but were not successful.”

© VCAA — 2019 Mathematical Methods 2 examination and examination report, Question 5f.

The actual interactive walkthrough

step 1 / 7

11PQ(a, 1−a³)(b, f⁻¹(b))f(x) = 1 − x³

a   = 0.540

A(a) = 0.7484

drag the gold slider in steps 3–4 · animations are exact, not sketches

First — what is it actually asking?

comments

Forget the algebra for a second. In plain English: there's a cubic, and a tangent line that traps two little regions against the curve and the axis. Part e asks you to slide that tangent until the trapped area is as small as possible. Then part f asks the exact same thing — but for the inverse function, measured against the other axis.

That's the whole trend here, and it's one Methods leans on constantly: take a question you can already do and change one small thing — a function for its inverse, one axis for the other — to see who panics and who notices it's the same question in a disguise.

your turn

Put parts e and f next to each other. What is the only thing that genuinely changed between them?

Have a think, then hit Next step when you're ready.

the system

One week at LockedIn

Every feature lands on the day it matters. The same rhythm repeats every week of the year, so nothing depends on cramming.

  1. Monday · in class

    A live two-hour class through the interactive booklet

    Two hours, capped at five students. Concepts play as animations while you annotate, and everyone gets asked questions.

    Photo · Live class — interactive booklet on screen

  2. Monday night

    Recording and booklet land in your Drive

    Every lesson is recorded to your own Google Drive with the annotated booklet and the week's homework. Miss a class, lose nothing.

    Photo · Google Drive folder — recordings and booklets

  3. Tuesday to Thursday

    Homework with interactive worked solutions

    Every question carries a line-by-line interactive solution, so you check your method as well as your answer.

    Photo · Interactive worked solution — step by step

  4. Any time, 11:59 pm included

    Stuck? Discord answers, unlimited

    Post the question and get a worked answer, not a hint. No cap, no awkwardness.

    Photo · Discord — a worked answer in the questions channel

  5. Before each SAC

    Exam craft and personalised papers

    Practice papers built around where your marks leak, plus the VCAA traps and timing drilled under exam conditions.

    Photo · Personalised practice exam — cover page

your tutors

Taught by people who've actually done it

Not a faceless agency. Three tutors who sat these exact exams, beat them, and kept the working.

Photo · Portrait · Jun

Jun

Offered a place in Monash Medicine straight out of Year 12.

Bachelor of Medical Science / Doctor of Medicine (MD), Monash University · Melbourne High School

ATAR · Class of 2025
99.10
Mathematical Methods
43 raw
Hours tutored
250+

Jun turned a 99.10 ATAR into one of the most competitive offers in the state: the Monash Bachelor of Medical Science / Doctor of Medicine. He scored 43 raw in Methods, and he built LockedIn's interactive teaching system because it's what he wished existed when he was studying. If a concept can be shown moving instead of described, Jun has already animated it.

Photo · Portrait · Yufeng

Yufeng

99.75 ATAR. One of the strongest maths records you'll find in a tutor.

Bachelor of Commerce — Actuarial Science & Finance, The University of Melbourne · Melbourne High School

ATAR
99.75
Mathematical Methods
43 raw
Specialist Mathematics
41 raw
Hours tutored
200+

Yufeng is the mathematician's mathematician: 43 raw in Methods, 41 raw in Specialist, an AMC Medal, and three consecutive first places out of 60+ teams at the MAV competition. Now studying Actuarial Science at Melbourne, he teaches the habits that separate a good mark from a top-of-the-state one, because he's used them.

  • AMC Medallist
  • AMC Prize ×2
  • AMC Best in School ×2
  • 1st of 60+ teams — MAV Maths Competition (2022, 2023, 2024)
Photo · Portrait · Lucas Guo

Lucas Guo

47 raw in Methods. 44 raw in Specialist. Yes, really.

ATAR
98.85
Mathematical Methods
47 raw
Specialist Mathematics
44 raw

Lucas holds the highest raw maths scores on the team: a 47 in Methods and a 44 in Specialist on his way to a 98.85 ATAR. Scores like that don't come from grinding more past papers than everyone else; they come from understanding the course deeply enough that nothing on the exam feels new. That's exactly what he teaches.

our programs

From Year 10 to raw 40+

View pricing & details

Specialist Maths

For those going deeper, Headstart to Units 3 & 4.

Specialist Headstart (Units 3 & 4)Starting Units 3 & 4 earlySpecialist Units 3 & 4Units 3 & 4

Your first class is free
— see the system for yourself

No commitment, no payment details — just one class to experience interactive VCE maths done properly.

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Classes capped at 5 — seats fill each term