Every symbol stands for a secret number. Use the equations to find out which number is hiding behind each symbol.
Work out the simplest equation first, then figure out the other symbols step by step. At the end, answer the question.
Example
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For parents
What does this exercise practice?
The secret code trains solving simple equation systems through trial and logical reasoning, without formally introducing variables.
Common pitfalls
Children often mix up which symbol has which value when two symbols appear in the same equation. Encourage them to write the value they found right next to the symbol.
How to practice at home
Invent your own secret code together with two symbols (e.g. sun and moon) and two equations. Who can find the values first?
Related: Magic code