When teaching preschoolers numbers, the most effective approach is to make learning fun and hands-on. Start with basic counting, such as counting to 10. Talk about the numbers and practice counting items together – such as apples, pieces of paper, or other everyday objects. Use this activity to introduce number recognition. As children become more comfortable recognizing numbers, start introducing simple math concepts like adding or subtracting a few items. You can also play matching games using number cards or dice. As their skills progress, you can start introducing activities such as simple subtractions, sorting objects by size, or identifying the shapes of numbers. You can also use games, worksheets, and puzzles to bring out the best in their skills. Above all, make sure to keep activities fun and engaging, while also providing support when needed.