Use red and green felt to cut out ladybugs and leaves.
Number your leaves 1-whatever.
Draw spots on your ladybugs to correspond with your numbered leaves.
Cut them out and get out your felt board!
Explain to your preschoolers that the ladybugs are lost and they need to find their way back to their homes, the leaves. Have them count the spots on the ladybugs and match them to the numbers on the leaves.