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Choice Island10 units · 69 lessons · self-paced

Make better decisions, one choice at a time

Choice Island is about choosing well when you cannot be certain. It starts with what you actually want, then works through must-haves and nice-to-haves, trade-offs, the costs you do not see, now versus later, chance and risk, whether to find out more first, choices that change, and decisions shared with other people.

Start learning Decision MakingSee all 10 units

What you will practise

  • Goals and must-haves

    Knowing what you want, and which parts are not up for trade.

  • Trade-offs

    Seeing what each option gains and what it gives up.

  • Hidden costs

    Counting what you give up by choosing, not only what you pay.

  • Risk and timing

    Weighing chance, and something now against something more later.

  • Judging decisions

    Telling a good decision from a lucky outcome.

Try one

From Unit 4, exactly as it appears in the app. In a lesson you would tap your answer and hear why it works, or why not.

Pip’s plans for Saturday afternoon: swimming 3, the cinema 8, the park 9, baking 4. Pip picks baking. What does that cost?

  1. Nothing: Pip gives nothing up
  2. Giving up swimming (3)
  3. Giving up all the other plans together (20)
  4. Giving up the park (9)
Show the answer

Giving up the park (9)

A choice costs the best thing it gives up. Picking baking gives up the park, worth 9: only one other plan could have happened instead.

The 10 units

In order, from the first step to the hardest. Each unit is a set of short lessons.

  1. 1Choices and Goals6 lessons
  2. 2Must-Haves and Nice-to-Haves7 lessons
  3. 3Trade-Offs6 lessons
  4. 4Costs You Don’t See8 lessons
  5. 5Now and Later6 lessons
  6. 6Chance and Risk8 lessons
  7. 7Find Out First?7 lessons
  8. 8When Things Change7 lessons
  9. 9Many Goals, Many People6 lessons
  10. 10Judging Decisions8 lessons

How a lesson works

  1. Step 1

    See the idea

    A lesson opens by showing you one idea, worked through step by step.

  2. Step 2

    Use it yourself

    Then it is your turn. A wrong answer tells you why, and hints come one at a time.

  3. Step 3

    Keep it

    Ideas come back in later lessons and in your daily workout, so you keep using them.

Questions about Decision Making

What is decision making as a skill?
Choosing on purpose: being clear about what you want, comparing options fairly, seeing the costs and risks, and judging the choice by how it was made rather than only by how it turned out.
Are there right answers?
Yes, within each exercise. The situations are set up so that one choice follows from the goals and facts you are given, and the explanation says why.
How does it adapt to me?
The start you pick sets your first level. After that, the exercises follow how you answer.
Do I need an account to start?
No. You can start as a guest, and your progress is kept in your browser on that device.

The other worlds

Start Choice Island today

Choose well when you cannot be certain. No account needed to begin.

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