Part-Part-Whole Estimation
Instructions
1. Adjust the slider to select the level of difficulty and click on the 'Start' button.
2. Click on the lower empty bar when it appears and type in your estimated value in the provided box.
3. Click on the upper empty bar when it appears and type in your estimated value in the provided box.
4. Click on the 'Next' button to show a visual representation of your entered numbers.
5. Click on the 'Next' button to show the actual values.
6. Click on the 'Reset' button to start again.