Grade 2 Shape Detective Adventures
Exploring 2D Shapes and Polygons I can identify and name shapes! I can count vertices and draw shapes!
Shape Detective Warm-Up Hunt
Look around our classroom Find different flat shapes Point and name what you see Circle, triangle, square - what else?
Meet the Shape Family
Circle - round with no sides Triangle - 3 sides and 3 vertices Square - 4 equal sides and 4 vertices Pentagon - 5 sides and 5 vertices Hexagon - 6 sides and 6 vertices Octagon - 8 sides and 8 vertices
Detective's Special Word
VERTEX: The corner or point where two sides of a shape meet One corner = one vertex Many corners = vertices
Build-a-Shape Challenge
Use playdough and toothpicks OR use geo boards and rubber bands Make a triangle - count the vertices! Try a square, pentagon, hexagon Check your partner's work
Polygon vs. Not Polygon
{"left":"Triangle - YES! Has straight sides\nCircle - NO! Has curved line, no sides\nSquare - YES! Has 4 straight sides","right":"Pentagon - YES! Has 5 straight sides\nOval - NO! Has curved line\nHexagon - YES! Has 6 straight sides"}
Draw Your Detective Shapes
Use dot paper or grid paper Draw a triangle, square, and pentagon Count vertices as you draw Make sure sides are straight! Extension: Try a hexagon or octagon
Shape Detective Exit Ticket
Name one polygon you learned today How many sides does a hexagon have? Where is a vertex on any shape? What makes a shape a polygon?