L.I. To construct 3D models

Using a match stick/straw and blue tack/marshmallows, make the following 3D shapes. Can you name the shapes and describe its properties?

Reasoning

Imagine a cube. Four faces are yellow, the rest are blue. How many faces are blue?

I am thinking of a 3-dimensional shape which has faces that are triangles and squares. What could my shape be?

Imagine a cube. Four faces are yellow, the rest are blue. How many faces are blue?

Imagine a pyramid with a square face.

What shapes are the other faces?

How many vertices does it have?