By section
The course consists of chapters and thematic lessons. You can focus on one topic and understand it step by step.
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Step by step
Rebuses and Secret Messages
We delete, change and rearrange letters, collect words and read our own codes using an explicit key.
Trial tasks are available without registration. To save results, start classes in your student profile.
- 10Thematic lessons
- 10Sequential lessons
- 50Scored tasks
- 10Theory sections
From topic to practice
What will we study
Choose a section or take classes in order. Both modes use the same objectives and results.
Remove the First Letter / Remove the Last LetterLet's analyze the rule and apply it in independent tasks.
Remove the First Letter
Remove the first letter.
Remove the Last Letter
Remove the last letter.
Replace One Letter / Read BackwardsLet's analyze the rule and apply it in independent tasks.
Replace One Letter
Replace one letter with another.
Read Backwards
Read the letters in reverse order.
Letters by Position / Join Word PartsLet's analyze the rule and apply it in independent tasks.
Letters by Position
Take the letters at positions the given positions.
Join Word Parts
Join the parts from left to right.
A Circular Alphabet / A Number KeyLet's analyze the rule and apply it in independent tasks.
A Circular Alphabet
Shift each letter by +1 in the cycle A→B→C→D→E→A.
A Number Key
Decode using 1=C, 2=A, 3=T, 4=B, 5=R.
A Reading Route / Two Commands in OrderLet's analyze the rule and apply it in independent tasks.
A Reading Route
Read the cells in this order: (1, 1), (1, 2), (1, 3).
Two Commands in Order
First remove the first letter, then reverse the remaining letters.
Two ways to practice
Step by step
Choose a grid of activities or a route map. Consecutive classes open in order. One lesson may contain tasks from different topics.
Learn at your own pace
Start with the first discovery
Free thematic lessons: 2. Free consecutive lessons: 2. Other classes open with Premium. Access is granted by the parent.
Completed tasks, stars and results are saved in the student’s profile. Hints and explanations help you figure out the answer.