Not really magic-- just math fun! Numbers should be inserted so that rows, columns, and diagonals all add up to the same sum. Solve the two squares 4 different ways.
The imaginative setting of a pizza parlor is used to help with fractions. If each person wants three slices, and everyone wants extra cheese, but only two people want mushrooms....
"Cut the patterns. Cut out the halves, fourths and eighths. Use them to help with adding and subtracting fractions and equivalent fractions." Common Core: Fractions: 3.NF.A.1