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 3 different ways.
Formatted like a standardized test, this 6 page document tests math skills such as addition, multiplication, estimation, congruence, division, even/odd numbers, perimeter, units of measurement, place value and more. These are approximately the skills tested in fourth grade, although state standards vary widely.
Introduction to the concept, with several pages for practice. These are in color so you can make a transparency, but they will look fine in black and white for the students.
Describes (with pictures) two dimensional figures, from line segments to angles to polygons, and then provides worksheets that can be used as quizzes or review pages.