Purpose of the toolStudents determine what each of the given shapes weigh to keep the scale balanced.
Explanation of the toolThree or more scales are displayed on your interactive whiteboard. The scales are in balance but they contain a variation of shapes and weights. One of the scales has a question mark. Look at the balanced scales and determine the missing weight.
Write down the answer(s) below and press the "Check" button.
You can select a different grade level by pressing the "Settings" button.
This tool was designed by one of our activity Contest winners Andy Adams!