New Dashboard developer: How to create a single # KPI report?

I am setting up Dashboards (vs Home Pages) for the first time.   I have watched University Training on Dashboards, but need a bit more guidance.

Problem:   HOW do I set up a new KPI report with single number display of Projects that meet certain criteria (e.g. Active).   From videos seems like this should be related to the 'old' circle guage charts.   I cannot find single # or circle option under gauge charts.   Can someone please help me with this simple task?   Thanks in advance.