Practice iCST
Sign in

Spatial reasoning practice

Get faster and more accurate at the four iCST-style tests.

Dice rotation, polygon rotation, shortest path and 3D balancing, as relaxed practice that explains every mistake and as tests that show your progress.

Get started free

The tests

Four tests, each with practice and a test mode

Dice Roll

Two lettered dice: could the right one be the left one rolled? One rule settles every pair, and the guide teaches it.

Polygon Rotation

Turned or mirrored? Practise spotting the difference quickly on shapes that get harder as edges grow.

Shortest Path

Find the shortest route past closed streets and type the building it passes. Practice draws the route in green.

3D Balancing

Tip a spinning shape until it stands straight out of a leaning base. Practice shows the axes and how many degrees off you are as you move it; under 1° counts as right.

How it works

Practise, then test yourself

  1. Sign in with Google or Microsoft. No new password to remember.
  2. Practise without a clock. After a wrong answer you see the right one, with a tip explaining it on full access, and it waits until you are ready.
  3. Take timed tests of 3, 5 or 10 minutes (3D Balancing: 25 examples, no timer). Your score, speed and the kinds of examples you struggle with are shown after each one.
  4. Get your report by e-mail. With full access, a PDF of everything you did, after any test and when you sign out.

Plans

Try it free, upgrade when it helps

Practise every test for free each day. Full access adds unlimited practice, timed tests and your progress. Sign in first, then choose your plan.

Get started

Your account

One account, one person, and no stored results

One person per account

An account can be signed in on one device at a time. Signing in somewhere else signs out the first device.

Only what is needed

We keep your e-mail address and your plan. Nothing else about you, and no test results.

Your results, your copy

Results stay in your browser while you are signed in and are deleted when you sign out. With full access, e-mail yourself the report to keep them.