This PDF file includes 10 element cards to match with their period and group number cards. I used this as a reteach activity for some of my students that were struggling with the idea of periods and groups on the periodic table.
I have also included a worksheet that student can do with this card sort for extra practice. The worksheet is for 8 elements and has the students practice APEMAN in order to find the number of protons, electrons, and neutrons for an atom of an element as well as ask them to identify the energy shells from the period number and the valence electrons from the group numbers.
*students will need a periodic table for this activity