I'm Mrs. Markavich, and I'm so excited that you're here with me today. Let's check out our plan for the day. Today, we'll be doing a number talk, and we'll be talking about solid shapes. Let's warm up ...

The work of the Greek polymath Plato has kept millions of people busy for millennia. A few among them have been mathematicians who have obsessed about Platonic solids, a class of geometric forms that ...