You are a team so listen carefully to each other. The teacher will circulate, listen, and assist when needed. Listen to language of children and note examples. Count items in the bags. Make bag button picture cards with the numeral on one side and corresponding dots on the other.
Child puts buttons to match number on card.
You may want to use real bags. Provide an assortment of shopping bags and items to buy. Tell the shopkeeper what you would like to buy. Discuss what children might do with each. Talk about where children would find the items and what would go in each bag.