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Puzzles & logic

Logic & Codes

Short lessons for ages 11–16: Sequences and odd ones out, Expert puzzles. Fresh practice every time, marked instantly, with a check-up at the end of each unit.

Start the programme
Ages 11–162 levels · 20 lessonsAbout 5 minutes a lessonFree to start

Level 1 · Unit 1

The first steps on the path

Lessons unlock one after another. Done lessons stay open for extra practice.

Try a sample lesson

This is how the first lesson starts. Sign in to play it and save stars.

Learn

Sequence puzzles

About 5 minutes

How it works

Look for what changes each time — add, multiply, shift or flip — and test your rule on every step.

  • Example 1

    2, 4, 8, 16, 32, ?

    Answer: 64

  • Example 2

    14, 22, 30, 38, 46, ?

    Answer: 54

Let’s practise

What’s inside

2 levels · 4 units · 20 lessons. Each unit ends with a check-up that unlocks the next one.

Level 1 · Sequences and odd ones out

  1. Sequence puzzles · 5 lessons

    • Sequence puzzles
    • Sequence puzzles (level 2)
    • Odd one out: number properties
    • Odd one out: number properties (level 2)
    • Sudoku 9×9

  2. Codes and binary · 5 lessons

    • Secret code (Caesar cipher)
    • Secret code (Caesar cipher) (level 2)
    • Binary numbers
    • Binary numbers (level 2)
    • Secret code (Caesar cipher) (level 3)
Level 2 · Expert puzzles

  1. Expert puzzles · 5 lessons

    • Sequence puzzles (level 3)
    • Odd one out: number properties (level 3)
    • Binary numbers (level 3)
    • Sudoku 9×9
    • Mazes (level 3)

  2. Mixed brain workout · 5 lessons

    • Number sequences (level 3)
    • Prime numbers (level 3)
    • Sequence puzzles (level 3) · Speed round
    • Sudoku 9×9
    • Secret code (Caesar cipher) (level 3)

Questions grown-ups ask

How long is a lesson?

Most lessons take 5 to 10 minutes: a short learn card, practice that is marked as you go, and often a quick game. Little and often works best.

Do children need an account?

A grown-up signs up and adds a child profile; children never need an email or password. Class students sign in with their class code and PIN.

Is the practice the same every time?

No. Every practice step is generated fresh, so a child can repeat a lesson as often as they like and still get new questions.

Can I see how my child is doing?

Yes. The parent dashboard shows each programme, the level, stars, when your child last practised, and the skills that are going well or need more work.

Can I print the lessons?

Lessons are made for the screen, but every practice sheet can also be printed from the worksheet maker.

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