Slimkop

CAPS · Grades 10 to 12 · Technical Mathematics

Technical Maths help that checks the units, not just the sum

Technical Maths uses real machines and real units, so a right formula can still give a wrong answer. Your child snaps a photo of their working. Slimkop checks the formula, the numbers and the units, then asks about the part that needs fixing.

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The one rule

Slimkop never gives the answer. It asks the question that helps your child work it out, and a right answer only counts once they can explain it.

A real example: a pulley in Grade 12

Made-up learner and working. A real Slimkop reply.

The question

A pulley with a diameter of 0,6 m turns at 300 r/min. Find its circumferential velocity in m/s.

The learner's working

v = πDn

v = π × 0,6 × 300

v = 565,5 m/s

  1. LearnerMy answer looks too big. Can you check it?
  2. SlimkopI can see the question: a pulley with diameter 0,6 m turning at 300 r/min, and your working shows v = π × 0,6 × 300 = 565,5.Your instinct is right — it does look too big. Your formula and substitution are correct, but look at your units carefully.When n is in r/min, the formula v = πDn gives you a speed in metres per minute, not metres per second.The question asks for m/s. What do you need to do to convert from minutes to seconds?

Watch it work

This reel shows a learner's working going in and Slimkop's question coming back. It has music, so turn up the sound.

Where Technical Maths often goes wrong

  • Circles and angular movement: r/min goes into a formula that needs r/s.
  • Trigonometry: the calculator is in degrees when the question needs radians.
  • Complex numbers: a sign changes when i² is replaced.
  • Mensuration: a length in millimetres is mixed with one in metres.

Grade 12 CAPS topics

  • Complex numbers
  • Polynomials
  • Differential calculus
  • Integration
  • Analytical geometry
  • Euclidean geometry
  • Trigonometry
  • Functions and graphs
  • Finance, growth and decay
  • Mensuration
  • Circles and angular movement

What your child gets

  • A photo of the working is enough to start.
  • Slimkop never gives the answer. Your child does the work.
  • Full Grade 12 mock papers of 150 marks in 3 hours, marked to NSC standard, with feedback on every question.
  • Quick tests of 5 questions in 20 minutes.
  • Help for Grades 10, 11 and 12, in English or Afrikaans.
  • In Parent view you see every chat, every test and the marks per CAPS topic.
  • Built on the CAPS document for Technical Mathematics, DBE books and study guides and the NSC question papers of November 2024 and 2025.
One price

The whole family, one plan

R300a month for the whole family*

7 days free, no card needed. Then R300 a month if you keep it.

Start 7 days free

*Ts and Cs apply: one family plan covers up to 3 children.

Questions parents ask

Will Slimkop give my child the answers?

No. It asks the question that helps your child work it out. The only time it shows an answer is after a timed mock exam, on questions where marks were lost.

Can it read handwritten working?

Yes. Your child takes a photo in the app. If the photo is too blurry, Slimkop asks for a clearer one. The photo is not stored.

I can't help with Technical Maths myself. Does that matter?

No. Your child gets help at any hour, also at 9pm the night before a test. You can read every chat in Parent view.

What does it cost?

The first 7 days are free and you need no card. After that you choose: R300 a month for up to 3 children, or simply stop. Nothing is charged by itself.