NC has some of the most diverse hummingbirds in the US. Here’s how you can identify them
North Carolina’s most common hummingbird — the Ruby-throated hummingbird — is slated to make an appearance in a few weeks, ...
National Council of Teachers of Mathematics10h
Tessellation Creator
What kind of tessellations can you make out of regular polygons? What shapes tessellate? If shapes can be combined to make patterns that repeat and cover the plane, then they tessellate. What patterns ...