Model your thinking by saying, “Do these shades match?” and then (depending on if it matches or not, “No, the shades don’t match. I think this one is darker…” or “Yes, these match!”
If the shades don’t match, move the clothespin down to the next darker color and ponder over whether they match or not. Invite your child to give you an opinion. Keep going until you reach the matching shade.
When you reach the matching shade, say, “These shades match!” and deliberately show your tot how to press the ends of the clothespin to open it, slide it onto the card, and release the clothespin to make it close.
Select a new clothespin and repeat the process.
Hand the work over to your tot once they understand the activity.