Lesson 1: 3.1 Triangle Basics
Duration of Days: 4
Lesson Objective
Classify triangles by sides and angles
Can a scalene triangle also be isosceles? Why or why not?
Scalene
Isosceles
Equilateral
Acute
Obtuse
CCSS.G.SRT.A.1
DO: Present various triangles and model how to measure sides and angles to classify them.
WE DO: Use physical Pattern Blocks to build and group triangles based on shared characteristics.
YOU DO: Complete a sorting worksheet identifying and classifying different triangles.
Understand structural shapes and classification systems.
DOK 1-2
Support (Low): Use physical, real objects that students can hold and measure directly.
Formative Assessment
Pattern blocks
GeoGebra