Here are the Texas Standards for learning 2D shapes:
(6) Geometry and measurement. The student applies mathematical process standards to analyze attributes
of two-dimensional shapes and three-dimensional solids to develop generalizations about their
properties. The student is expected to:
(A) identify two-dimensional shapes, including circles, triangles, rectangles, and squares as
special rectangles;(D) identify attributes of two-dimensional shapes using informal and formal geometric language
interchangeably;
(E) classify and sort a variety of regular and irregular two- and three-dimensional figures
regardless of orientation or size; and
(F) create two-dimensional shapes using a variety of materials and drawings
It's not uncommon for K1 to already know the names of the 2D shapes. Since many learners come in with the recall of shapes I try to give a deeper understanding with the shapes. This is one of my favorite activities to challenge K1. You can see they are trying to figure out how many sqyares they need to fill the circle. It usually takes about 10 minutes and lots of effort for them to realize....it can't be done!
I learned this fun "whole body" shape making from a training earlier this year. They LOVED it!
Some math station work:
