Alicia isn't very good with numbers as she is with alphabets so it really takes a lot of patience to teach her the concept of one-to-one correspondence. We're still trying.... lol.
Here's a simple activity I did with her with just her colourful pompoms, paper plates (with numbers) - (beautifully decorated by my mum, which we pasted on her room wall earlier on when she was a baby) and a pair of tongs (optional).
Simply get your preschooler to place the right number of pompoms (reflected on the paper plate) on the paper plate. :)
Count together with her to reinforce the concept.
*Photos taken on 27Nov 2010*