If it doesn't load correctly, click the download link in the upper right corner of the window to download the video instead.
To do the activity, select one crop, then one soil, and click 'Check Combination.' If it's the right soil for that crop, the 'Continue' button will become available (if not, choose another soil and try again). Click it, and the pH and nutrients sliders will appear. Choose an option for both of them, and click 'Check Impact.' The Crop and Environment reports will then become available. Click 'Generate Report.' After viewing the report, a 'Reset' button will appear, which you can click to start over for the next test.