Materials For each pair of students 3 doughnut magnets 1 paper clip For each student activity sheet Teacher Knowledge The force of a three magnet unit will be greater than that of a two magnet unit and that of a one magnet unit.
(student activity; will be; greater than that of a two magnet unit and that of a one magnet unit)
student activity
will be
greater than that of a two magnet unit and that of a one magnet unit