Class 22/4 - It's and They're
Practice with numbers
https://wordwall.net/resource/6009662/numbers-1-20
It's and They're
https://wordwall.net/resource/14655267/english/go-getter-103-its-or-theyre
https://wordwall.net/resource/54158627/kids-2-its-theyre
It's a pen / They're pens
It's a book / They're books