This is an instructional video on how to fold an octahedron with Post-It notes. Use 3 different colors of Post-It notes. Take 2 Post-It notes in the same color, fold it horizontally and diagonally to make four squares. Fold diagonally the sticky side, you will end up with a cross or a star. Put the tight corner between the gap, alternating the color. That's it! You will end with an octahedron Watch this video and make an octahedron using Post-It notes by yourself.
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