Roman Number Scavenger Hunt
This article is a good one. This explains the way to teach the concept. There is also a treasure hunt idea that could make the learning even more exciting.
Roman Number Scavenger Hunt Create a bunch of Roman numerals and hide them in the house, or at a park. You can also attaché them to different items. Then give the children a sheet with Arabic numerals (1, 2, 3 etc.) and have them write down what the corresponding Roman numeral is attached to.Link
Draw and paint Roman Numerals
Draw and paint Roman NumeralsLink
A Roman Numeral RiddleLink
Worksheet to practice Roman NumeralsLink