This set of pizza pie-themed algorithm coloring worksheets is a wonderful way to introduce the basics of building a coding algorithm. They focus on following the steps featured on a Blockly Block algorithm. There are two versions of the coloring page available in this set. The color version could be laminated and used over and over again.

These activities can be done with a group of children, in pairs, or individually. They could be used during Pi Day or any time you like.