If the word is correct, it is initialed. Student is then asked to spell the word orally. If the word is correct, the card is stamped and filed in the spelling box in alphabetical order. The word is considered mastered. I then add these to the first coloured page every time the duotang is handed in for marking.
Lists can be created for the entire class - the teacher can decide.
Really focus on the sentence students write on the cards - it must be really clear. When checking the cards, you may wish to have a two check system set up - one for the word and one for the sentence. Use the conventions and structures of oral and written language to convey clear meaning. As you evaluate student writing, note spelling errors in appropriate squares. Ensure you have a copy of the lists, either by photocopying the master page, or by having students write their individual lists onto file cards.