Cover image
    Activity

    Make an Umbrella

    Strawbees Team

    The springy nature of the plastic joints pop the umbrella open. Pull the middle of the internal structure to control the 5 stretchers. The stretchers connect to the friction joints that push the 5 ribs connected to the top. The 5 joints are flat enough for easy collapse of the umbrella to store for another rainy day.

    8-14+
    25 min
    :
    United States 3, 4, 5, 6, 7, 8
    Engineering Design
    Forces

    Overview

    00:05

    Overview

    The springy nature of the plastic joints pop the umbrella open. Pull the middle of the internal structure to control the 5 stretchers. The stretchers connect to the friction joints that push the 5 ribs connected to the top. The 5 joints are flat enough for easy collapse of the umbrella to store for another rainy day.