1 of 25

Slide Notes

DownloadGo Live

Geometry Demo

Published on Nov 19, 2015

No Description

PRESENTATION OUTLINE

GEOMETRIC SHAPES

GEOBOARDS

GEOMETRY

COMES FROM THE GREEK MEANING

GEO & METRON

EARTH & MEASUREMENT
Photo by blmiers2

CLASSIC GEOMETRY

WAS REVOLUTIONIZED BY EUCLID
Photo by garrettc

THE ELEMENTS

CONSIDERED THE MOST INFLUENTIAL TEXTBOOK
Photo by alexcoitus

GEOBOARDS WERE INVENTED

BY ENGLISH MATHEMATICIAN CALEB GATTEGNO

BREAK INTO FOUR GROUPS

Photo by bibendum84

GEOBOARDS

CAN BE USED TO CREATE GEOMETRIC 2-D SHAPES

2D SHAPES ARE

TWO DIMENSIONAL SHAPES HAVE HEIGHT & LENGTH
Photo by tim caynes

JOIN TOGETHER TWO POINTS

USING YOUR GEOBOARD

WHAT DO YOU HAVE?

Photo by marfis75

WITH 3 SIDES

MAKE A SHAPE
Photo by John-Morgan

WHAT DID YOU MAKE?

Photo by Cut To Pieces

YOU JUST MADE A TRIANGLE

A 3-SIDED POLYGON
Photo by cavale

WITH 4 SIDES

MAKE A SHAPE
Photo by Leo Reynolds

WHAT DID YOU MAKE?

Photo by Björn Utecht

YOU JUST MADE A QUADRILATERAL

A 4-SIDED POLYGON
Photo by Ikhlasul Amal

MAKE A SHAPE THAT HAS 1 SIDE

HINT: YOU MAY HAVE TO USE THE BACK!
Photo by Leo Reynolds

WHAT DID YOU MAKE?

Photo by danielito311

WITH 4 CORNERS

MAKE A SHAPE
Photo by jlz

WITH 5 CORNERS

MAKE A SHAPE

I'm a square, I have 4 sides
I'm a square , I have 4 sides
We are squares, We have 4 sides
1 2 3 4
We are squares

I'm a circle, I go round & round
I'm a circle, I go round & round
We are circles, We go round & round
Round & round, we are circles

Photo by kevin dooley

I'm a triangle, I have three sides
I'm a triangle, I have three sides
We are triangles, We have three sides
1, 2, 3
We are triangles

OBJECTIVES

  • to identify circles, triangles, and polygons
  • recognize that quadrilaterals have 4 sides
  • recognize that triangles have 3 sides
  • use geoboards to create two-dimensional shapes
  • identify, describe, & sort plane geometric figures