Straw Cube

Stem Activities

Ages: 6-8

Less than 30 minutes

Grownup needed

Create a shape-shifting cube using just straws and rubber bands that can transform between flat and three-dimensional forms at will.

Materials Needed

  • 6 straws
  • Rubber bands
  • Marker pen
  • Scissors
  • Ruler
Several items are arranged on a light wood-grain surface, likely for a craft or science project. These include a small bundle of red and orange drinking straws, a yellow rubber band, a white marker pen, a pair of blue-handled scissors, and a clear plastic ruler. The arrangement suggests preparation for a hands-on activity.

Step-by-step tutorial

Step 1

Use scissors to cut off the bendable part of all 6 straws.

Two hands manipulate sections of orange plastic drinking straws against a light wood-grain background. One hand holds a full, uncut piece of straw, while the other holds a shorter piece with a diagonal cut at one end, revealing the corrugated inner structure. A small pile of uncut straws is visible in the background. The image suggests a craft or DIY project involving the straws.
Step 2

Cut each of the 6 straws in half, trying to keep all pieces the same length.

A person is using a pair of blue-handled scissors to cut a bundle of red and orange drinking straws. One hand holds the straws together while the other operates the scissors. The backdrop is a light wood-grain surface. The image conveys a craft or DIY activity involving cutting the straws.
Step 3

Cut the rubber bands to create elastic strings.

A hand holds a cut rubber band stretched taut, with numerous thin strands splayed out like spaghetti. A pair of blue-handled scissors is positioned as if in mid-cut, having just created the many strands from the original rubber band. The background is a light wood-grain surface. The image suggests a DIY or craft project, or possibly an experiment involving the properties of rubber bands.
Step 4

Connect 3 cut rubber bands to make a long elastic string, then thread 6 straw pieces onto it.

Two hands work on threading a thin, light-yellow rubber band through short segments of orange drinking straws. A partially constructed hexagonal shape made of connected straw segments is visible on the light wood-grain background. The hands are in the process of adding another straw piece to the structure using the rubber band. The image suggests a craft or construction activity.
Step 5

Tie the rubber band between the first and sixth straw pieces, and trim any excess.

Two hands hold a partially completed hexagonal structure made from short orange drinking straw segments connected by a thin, light-yellow rubber band. The hands are pulling the rubber band taut, showing the next stage of connecting more straw pieces. The light wood-grain background provides contrast to the orange and yellow materials. The image suggests a craft or construction activity in progress.
Step 6

Next, thread 2 straws onto a rubber band to make two sets. Then thread 1 straw onto a rubber band to make another two sets.

Several short segments of red drinking straws are laid out on a light wood-grain surface, connected by lengths of thin, amber-colored rubber bands. The straws and rubber bands form a loose, abstract pattern, with some sections resembling connected joints or limbs. The image suggests components for a craft project or a deconstructed version of a previously assembled object.
Step 7

Tie the elastic strings with two straws to the four points shown in the image.

Two hands hold a geometric shape constructed from short segments of orange and red drinking straws. The shape resembles an irregular hexagon or a flattened cube, with the straws forming the edges. The points where the straws are connected are clearly visible. The structure rests on a light wood-grain background. The image suggests a craft project or a geometric model made from simple materials. The circled areas highlight the straw connections, emphasizing the construction technique.
Step 8

Take one of the single-straw elastic strings and tie its ends to the positions marked in the image.

Two hands hold a three-dimensional structure made of short orange and red drinking straw segments. The structure resembles a simplified cube or rectangular prism, viewed at an angle. The connections between the straws are clearly visible, and are highlighted by black circles. The object sits on a light wood-grain background. The image suggests a craft project, a geometric model, or a simple construction made for educational or recreational purposes.
Step 9

Tie the ends of the other single-straw elastic string to the remaining two intersection points.

Two hands manipulate a three-dimensional structure constructed from short segments of orange and red drinking straws. The structure resembles a cube or rectangular prism, and the hands are gently shaping or adjusting it. The object rests on a light wood-grain background. The image conveys a sense of playful construction or model-making using simple materials.
Step 10

Finally, stand your cube upright, and your straw cube is complete.

Two hands hold a three-dimensional cube constructed from short segments of orange and red drinking straws. The cube is held at a slight angle, displaying its form. The light wood-grain background provides contrast to the colorful straws. The image suggests a simple construction project or a geometric model made for educational or recreational purposes.
Step 11

Try twisting the straw cube to create different shapes!

Two hands hold a three-dimensional cube constructed from short pieces of red and orange drinking straws. The cube is positioned slightly angled on a light wood-grain surface. The image suggests a simple craft project, a geometric model, or a child's construction activity. A partially visible wrapped gift is present in the background, possibly indicating a festive or celebratory context.

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