Grade
4
Mobile Math: Balancing Fractions
Look at the mobile below. What do you notice? What do you wonder?
Find the missing values so that the mobile is balanced.
![This mobile is balanced between 2 strings. The left string has 4 triangles. The right string has 2 squares. The value of a triangle is 1-tenth.](/sites/default/files/styles/large/public/inline-images/tmusQQQre1dbK4ciBxxw4KxFcA1NjIzAVYeWre1nUkygh9bp8Z.png?itok=swnOm7M8)
Write an equation that describes the mobile.
![This mobile is balanced between 2 strings. The left string has 4 triangles. The right string has 2 squares. The value of a triangle is 2-thirds.](/sites/default/files/styles/large/public/inline-images/rTeymbmzbu2D3iYMN5EJAxRQxXurCg72pyQ1GuvLe8TNXAEmnq.png?itok=0bNud-90)
If the value of the orange triangle is now ⅔, how can you change the value of the squares so that the mobile remains balanced?
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Reference for Educators
Sample problems and solutions