We extended this to our practical life area with some penny polishing.
D takes a penny from the bowl and sets it on the paper towel. Then she puts two/three drops of lime juice and also spoons some salt on to the penny. She uses a q-tip (not in the picture above!) to polish the penny. She flips the coin and does the same to the other side. She rubs the penny with the cloth and puts the polished penny into the bottle on the right. D loved this and it was awesome how shiny each penny became! Here is D polishing the penny!
I am planning to put out more work on the coins to teach her to combine denominations and learn the values. Plus I will also play some shopping games with her so she can put to use what she learns! I will post more as we proceed with her lesson!