Objective: The Blue Constructive Triangles help the child
recognize some of the properties of right angled triangles and
familiarlize him with geometric forms.
Ages: 4 - 6
Control of Error: The pattern is visually incomplete or
wrong.
Prerequisite: The Constructive Triangles should be very
familiar to the child prior to this work.
Presentation 1: Roll out a rug in preparation for the
presentation. Select the Blue Constructive Triangles from the
shelf and remove four triangles from the box. Place the four
triangle so that the 90 degree angles (right angles) are all touching.
Conclude the presentation by returning the triangles to the
box and rolling up the rug.
Presentation 2: Proceed as above except use six triangles and
put the 60 degree angles together.
Presentation 3: Proceed as above except using all twelve
triangles, putting the 30 degree angles together.
Making the Work:
Print two
copies of the Blue Constructive
Triangles file on card stock or photo paper. Trim. Laminate and trim
again if desired.
