Mobile Math: 6 and 1.2

Look at the mobile below. What do you notice? What do you wonder?

Find the missing values so that the mobile is balanced.

A balanced mobile with 2 strings. The left string has 1 pentagon and 1 triangle. The right string has 3 triangles and 1 square. The value of the pentagon is 6. The value of the triangle is 1.2. The value of the square is unknown.

Follow-up 1

Write an equation that describes all or part of the mobile.

Follow-up 2

If the value of the triangle is still 1.2, but the values of the pentagon and square have changed, what could their values be, so that the mobile remains balanced?

A balanced mobile with 2 strings. The left string has 1 pentagon and 1 triangle. The right string has 3 triangles and 1 square. The value of the triangle is 1.2. The values of the other shapes are unknown.

Printable Version

Reference for Educators