Activity 7A.5 (Lab Activity)
Note to Teachers: There is no corresponding student version of this separation activity on the site. This is an in-class activity.
|Lesson Overview||This activity illustrates another separation technique, utilizing magnetic properties of some substances.|
|Learning Objective||Students will be able to understand that separation using magnetic properties applies only to substances with magnetic properties.|
Per lab group:
Caution students to watch out for dropped marbles or ball bearings on the floor.
Students should be able to work carefully with materials that are both difficult to keep together on a lab table and can break or chip (glass marbles).
|Student Ability Level and Grouping||
This activity can be done by middle school students working individually or in pairs.
Teacher prep: Before class, prepare a cup of marbles and a cup of ball bearings for each lab group so that they are ready to distribute along with a tray and magnet for each group.
|Assessment||See Activity 7A.7, Assessment: A Challenging Separation.|
|Resources for Further Study||
An interesting activity that removes elemental iron from breakfast cereal using a magnet can be found at http://www.mcrel.org/whelmers/whelm07.asp.