| 摘要 |
PURPOSE: A study puzzle is provided to improve studying effect and the concentration of students by being repeatedly used for studying languages and mathematics. CONSTITUTION: The consonant and the vowel of Korean and the letter of foreign language are engraved on one side of puzzle piece body(100). Numbers and symbols are engraved on the other side of the puzzle piece body. A plurality of recesses(10) is arranged on two lateral sides of the puzzle piece body. A plurality of protrusions(20) is arranged on two opposite sides of the puzzle piece body. |
