emacs lisp project
Paper Folding: Canoe, Sail Boat, Topedo Boat
If you grew up in Asia, you would know about paper folding. (called origami in Japan and western nations). Most kids do. Here are some things i've learned since i was in grade school in Taiwan (1980s).
Use a rectangular paper. Fold the paper in half (over the shorter side). On one side, fold the two corners inward, then the bottom up.
Repeat the above one more time.
Do the same thing for the other side (so it looks like this).
Now, hold the multiple edges on both sides and flip the whole thing into a canoe.
A sail boat.
Use a rectangular paper. Fold it in half, then fold it like the beginning steps of paper plane (see left picture). Then, fold the flaps up, on both sides.
Put fingers into bottom hole, and gently pull outward, so that you can fold it into a diamond shape (above left). Now, fold the legs up on both sides into a hat (above right).
Again, put fingers into the bottom hole, pull gently outward, to refold it into a diamond shape (final shape shown above). Now, pull the “legs” on top to puff it into a sailboat.
Use a square paper. First, make some creases for guide. Fold the paper in half. Unfold. Fold the paper along the diagonal, unfold. Fold the paper like a beginning steps of making a air-plane, unfold. Then, put it into the shape above. (for first timer, you might take a few tries)
Fold one of the pointed leg, so that one edge align with the top. (shown as the bottom side above) Then, make another fold to insert into the top hat. (create the hat by folding it backwards first.)
Do the same for the other side. Then you have the above. Now just puff it up.
There are quite a few others i knew as a school kid. Popular ones include:
frog (actually jumps, by pushing it down and release.)
a east/south/west/north thing
a flat thing that loudly pop open when swung.
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