Name of Activity  Building Strong Shapes 

Author  STOMP 
Keywords  Triangle, square, braced square, LEGO, Simple Machines, sturdy, beam, brick, plate, axle, bushing, friction peg, connector peg, axle extender 
Subject  Simple Machines 
Grade Level  K, 1, 2, 3 
Time  1 Hour Total 
Lesson Objectives:   Familiarize students with specific LEGO building strategies and any new pieces.  How to use pegs (friction and connection).  Building a triangle and a square.  Bracing with beams.  Teach the names of LEGO building pieces.  Reinforce knowledge of shapes. 
Brief Description  Students will be guided through this activity, building a triangle, a square, and a braced square using LEGO pieces. Students will then attempt to build a sturdy box on their own with LEGO pieces from their kit. 
Materials Needed:   LEGO Simple Machine kit. 
Preparation and Set Up:   Construct example shapes.  Arrange students in pairs.  Distribute LEGO kits. 
Necessary Background  N/A 
Procedure 

Extensions or Modifications:   Introduce measurement and have the students measure their creations using different units.  Build the widest/longest structure.  Build the shortest structure using only 10 pieces. 
Sample Image 1  http://sites.tufts.edu/stompactivitydatabase/files/formidable/sturdy1.png 
Sample Image 2  http://sites.tufts.edu/stompactivitydatabase/files/formidable/sturdy2.png 