Print off one of two foldables for your students. The first version steps the students through adding and subtracting mixed numbers by changing the mixed numbers to improper fractions. The second foldable has the student regroup in order to add or subtract mixed numbers. For either version, print the foldable on front & back -- it will fold to the front in a 'double doors' format with addition on the right and subtraction on the left. Walk through a problem on each side, having the students copy/work the problem each step of the way. The students may make a cut for each step if you want them to open up the foldable one step at a time.