Instead of just teaching my fourth graders the algorithms to convert between mixed numbers and improper fractions, I created 5 pages of match-ups to practice how to decompose an improper fraction into a mixed number and vice-versa. Our standards stress the importance of breaking apart fractions in addition and subtraction with like denominators, so this strategy builds on prior knowledge and helps students see what it really means to have an improper fraction equal a mixed number. There are 20 "space-themed" match ups and an answer sheet. I use these in small groups or as task cards.
Please leave feedback; I hope these are helpful for your class!