Brain Teasers 3D Wooden Puzzles Interlocking Blocks Educational Toys Mind Games Iq Challenge Test

ANCIENT MORTISE AND TENON CONNECTION WOODEN PUZZLES Puzzle About 3 3 3 inches Package About 8.7 6.3 3.1 inches Shipping Weight: About 0.7 lbs Package Included6 pieces of wooden puzzles / box What is Mortise and Tenon Connection ? This kind of 3D wooden puzzle, also called Luban Lock or Kongming Lock, are based on the principles of the ancient Chinese construction of buildings and later furniture making. The components of burr puzzles fit together by means of hidden joints, and they stay together without the use of glue or nails, allowing them to be easily taken apart and reassembled. Burr puzzles are made of numbers of wood or bamboo sticks and blocks. It is by cutting a notch in the center of each stick in such a way that the pieces can be assembled without leaving a void inside their intersection. The sticks intersect each other, but they are also interlocked so that they stay together without falling to pieces. Brain teaser puzzles come in different shapes with different internal structures. The puzzle may look simple, but it contains lots of mysteries, which require much patience and an understanding of spatial relationships to put back together. Parents and kids can both join together in the fun, it is also good to boost the relationship between parents and kids. BRAIN TRAINING — The brain teaser puzzles are designed to give your brain a decent workout. LOGICAL AND SPATIAL ABILITY — The puzzles are made of wooden concave and convex blocks which mesh perfectly. Training your logical reasoning ability and space imagination ability. FANTASTIC GIFT — The carbonized surface wooden puzzles are not only classical educational toys but unique decorations as well. SPOILER ALERT — Stop searching solution videos if you don’t want to have the challenge ruined. MIDDLE SIZE — 6 pieces wooden puzzles per box. Puzzle About 3 3 3 inches. Package 8.7 6.3 3.1 inches. Shipping Weight: 0.7 lbs / box.