This is a lesson that integrates programming in Python or Scratch into 3rd grade math. The focus of this lesson is on polygons.SOL's:Math 3.12The student will a) define polygon; b) identify and name polygons with 10 or fewer sides; and c) combine and subdivide polygons with three or four sides and name the resulting polygon(s).CS 3.2  3.2  The student will construct programs to accomplish tasks as a means of creative expression using a block- or text-based programming language, both independently and collaboratively a. using sequencing; b. using loops (a wide variety of patterns such as repeating patterns or growing patterns); and c. identifying events. 

Subdividing polygons -- Mathematics Instructional Plans (MIPs) help teachers align instruction with the  Mathematics Standards of Learning (SOL) by providing examples of how the knowledge, skills and processes found in the SOL and curriculum framework can be presented to students in the classroom.

This problem provides students with an opportunity to discover algebraic structure in a geometric context. More specifically, the student will need to divide up the given polygons into triangles and then use the fact that the sum of the angles in each triangle is 180_.

Students will create flowers using polygons with 3-10 sides, classify and arrange them, based on different attributes (SOL CS 4.5).  This activity would be done with 4th graders,  but it could be modified for 3rd or 5th grades. The students would work both individually and collaboratively.

Combining and subdividing polygons -- Mathematics Instructional Plans (MIPs) help teachers align instruction with the Mathematics Standards of Learning (SOL) by providing examples of how the knowledge, skills and processes found in the SOL and curriculum framework can be presented to students in the classroom.