Projectiles

Rochelle Ingram                Delano School
                               3937 W. Wilcox St.
                               Chicago IL  60624
                               (312) 534-6620

Objective:

This miniteach is designed for grades 3-8.  The student will be able to measure
angle and distance of an arc.

Materials Needed:

balls                               ping pong guns
water guns                          bow and arrow
dartboard/darts                     stopper guns
rubberbands                         protractors
aluminum foil                       string
plastic spoons                      meter sticks
rocket gun

Strategy:

The class will observe a demonstration of a ball rolling off a table, thrown in 
the air, and rolling off of a ramp.  The class will give a very short 
description of what they have observed. 

There will be seven stations set up to observe.
     1.  Water guns
     2.  Dartboard/darts
     3.  Slingshots with a rubberband and aluminum foil
     4.  Catapults with the plastic spoon and aluminum foil
     5.  Rocket gun
     6.  Ping pong gun
     7.  Bow and arrow

The class will give a very short description of what they have observed.

Performance Assessment:

The class will break up into groups of four.  Each group will get some stopper 
guns to measure the angle and the distance of the stopper.  The angle will be 
measured using a protractor and string.  The string will hang straight down in 
order to figure out the angle of the arc.  The distance will be measured using a 
meter stick.  The class will describe their observations and give a conclusion. 

Conclusion:

The class will be able to answer this question:  What angle was needed to get
the greatest distance?  

Answer:  A forty-five degree angle will give the greatest distance.