Encourage the older child to choose ten total items and describe his or her number sentence. It would be best to keep the choices to three (ex: books, puzzles, dolls).
Limit the choices to just two types of objects and ask the child to choose three items (Ex: you could offer three books and three dolls. Have the young child choose three total items. Help the child with his or her number sentence. For example “I see you chose one doll plus two books; 1+2 = 3”.).