109 2 SUBJECT Maths TOPIC FROM CURRICULUM GENERAL TOPIC: SUBTOPIC Geometry - Pythagorean Theorem LEARNING OBJECTIVES -To learn about the Pythagorean Theorem, -to create their own snail-like spiral. ART EXPRESSIOSIONS/VISUAL FORMS USED Drawing. SPECIAL REQUIREMENTS Sharp pencil, ruler, paper, calculator. MOTIVATIONAL STAGE TITLE OF THE LESSON The Pythagorean Theorem on a snail-like spiral ISSUE/PROBLEM (society issue, issue that is seen relevant from pupils’ perspective, issue linked to some nature phenomenon or phenomenon from pupils’ everyday life) How can we create a drawing using mathematical equations? INVESTIGATIONAL STAGE DESCRIPTION OF THE ACTIVITY Inspiration for the activity: https://www.youtube.com/watch?v=vrs2uGV_XRs The activity is about the Pythagorean Theorem and how to apply it to construct a snail-like spiral with a number of interesting properties. This spiral is called a square root spiral or Theodorus spiral.