Included in this revised freebie are:
20 Number Sequencing Task Cards with QR Codes to check answers
Paper Answer Key
I would print out, all the cards, glue the QR codes to back of each task card and laminate.
** You will need to download a free QR scanner app to do this activity.
After your students fill in the recording sheet with their answers, have them scan the QR Codes on back of task cards to self-check. or however you would like to manage it. They will have so much fun scanning the codes to see if their answers are correct!