Pick the symbols and difficulty level you wish to play and click "Start Game" to begin.
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Periodic Table (match elements with their symbols)
European Flags (match European countries with their flags)
Clocks & Time (match clock time with digital time)
Fractions and Decimals (match fractions with their decimal values)
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Easy (4 pairs)
Medium (7 pairs)
Hard (10 pairs)
Extra Hard (14 pairs)
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