Slimkop

CAPS · Grades 10 to 12 · Physical Sciences

Physical Sciences help that finds the step your child missed

The formula is right and the answer is still wrong. That is often the hardest kind of mistake to find alone. Your child snaps a photo of their working, and Slimkop shows where the thinking went off track. It explains the idea, then your child does the sum.

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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: Newton's second law in Grade 11

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

The question

A 2 kg block is pulled across a table by a 10 N force. Friction is 4 N. Find the acceleration.

The learner's working

F = ma

a = 10 ÷ 2

a = 5 m·s⁻²

  1. LearnerWhy is my answer wrong?
  2. SlimkopI can see your attempt: you used F = ma with the 10 N force and got 5 m·s⁻².Here's the key thing you missed: Newton's second law uses the NET force — the total of all forces acting on the object in that direction, not just the one pulling it.There are two horizontal forces here. The 10 N pull and the 4 N friction. Friction acts opposite to the motion, so it opposes the pull.Before you can use F(net) = ma, you need to find F(net) first.What do you get when you combine those two forces correctly?

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 Physical Sciences often goes wrong

  • Newton's laws: one force is used in place of the net force.
  • Direction: a positive direction is not chosen first, so the signs do not agree.
  • Units: grams, centimetres or kilojoules go into a formula without being converted.
  • Chemistry: the mole ratio from the balanced equation is left out.

Grade 12 CAPS topics

  • Momentum and impulse
  • Vertical projectile motion
  • Work, energy and power
  • Doppler effect
  • Electric circuits
  • Optical phenomena
  • Organic chemistry
  • Organic macromolecules
  • Chemical equilibrium
  • Acids and bases
  • Electrochemistry

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 Physical Sciences, the free Siyavula textbooks for Grades 10 to 12 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 Physical Sciences 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.