To get started with this activity, you'll need to gather an egg carton, markers and several pom-poms. When working with multiple children, have the children work in pairs or small groups, providing each their own egg carton, markers and pom-poms.
Write the numerals 0–10 on the inside bottom of each egg carton section. Because there are 12 sections, there will be one left over. It is probably too early to add "11" to the children's list of numerals.
With the cartons marked and the children split into small groups, have the children take turns tossing a large pom-pom ball into the egg carton.
Each time that a pom-pom is tossed, have the child identify the numeral that is in the egg slot where the pompom landed.
Repeat the game by tossing pom-poms and identifying the numerals. You may have children in pairs take turns tossing and identifying.