Welcome to K-5 Math Teaching Resources! This site provides an extensive collection of free resources, math games, and hands-on math activities aligned with the Common Core State Standards for Mathematics. Our math task cards and games are suitable for use in math centers, small group and whole class settings. Task card instructions are presented in large print with child-friendly language to enable students to work independently, or in partnerships, after a brief introduction to the task. All files are in PDF format.