First classify the puzzles according to color, right angles, and straight edges;
Inspire people to reason and think and improve hand-eye coordination.
"Workers must first sharpen their tools if they want to do well." I believe everyone is familiar wit...
What other uses are there for post-it notes in daily life? Generally speaking, post-it notes are mai...
Making your own calendar is a fun activity for all ages. Whether it is a simple or a professional ca...
Recently, friends around me have become popular to jigsaw puzzles. If you like to join in the fun, y...