
If you are citizen of an European Union member nation, you may not use this service unless you are at least 16 years old.

Files spread between Dropbox, Google Drive, Gmail, Slack, and more? Dokkio, a new product from the PBworks team, integrates and organizes them for you. Try it for free today.

TG Grade 3 Perimeters of Polygons
Page history
last edited
by Michelle Pettit 9 years, 10 months ago
Submitted by:

Michelle Pettit

Date:

3/30/10

Edited by:

Susan Montry

Date:

4/1/10

Unit Name: Team Geometry

Unit Length: 6 weeks

Overview: Find the perimeter of a playing court using polygons, triangles and quadrilateral shapes.

DESIRED RESULTS

TEKS and SEs
TEKS 3.8Identify classify and describe two and three dimensional geometric figures by their attributes. Compare two dimensional figures or both by their attributes using formal geometry vocabulary.

Critical Vocabulary
Polygon, side, vertex, triangle, quadrilateral, square, rectangle, parallelogram, perimeter, length, width

Enduring Understandings (Big Ideas)
In this lesson, you will learn to recognize a polygon and describe it by its number of sides.

Essential Questions
What is the same in all the polygons?
How can you sort the shapes?
Are all the sides equal length?

Learning Goals and Objectives
Find the perimeter of polygon shapes.
Sort and classify polygons based on perimeter size and shape.

Materials Needed
Area Perimeter black line master, scissors, sticky notes, ruler

ASSESSMENT PLAN

Performance Tasks
Students measure each shape and add the sides together to get the perimeter of the whole court and half the court.
Students measure and record the perimeter for all the shapes, then classify them as triangle or quadrilaterals from least to greatest.
Students measure perimeter for polygon shapes with interactive website for direct feedback
http://www.ixl.com/math/practice/grade3perimeter

Other Evidence
Sts work together on the performance tasks
Sts complete the perimeter classification independently.

LEARNING PLAN

Engage:
Sts compare & contrast different sport playing courts by looking for shapes within a shape with a partner.
Explore:
Sts find the perimeter of the large rectangle before cutting, and find the perimeter of half the court with a partner.
Explain:
Write statements to describe what you discovered with a partner using different colored markers on paper.
Elaborate:
Sts sort by shape of polygons; triangles 3sides, quadrilaterals4 sides
Sts measure the sides each of each shape using centimeters and add the sides to get the perimeter of the shape with a partner.
Evaluate:
Sts order pieces from least to greatest perimeter using centimeters, independently.
Compare results as a class.

Time
5min
5min
10min
20min
15min

Extension:
All pieces on the sheet fit perfectly into a rectangle. Could all pieces be arranged into a triangle, square, or parallelogram?
Modifications:
Provide only half the sheet of shapes to the students, reduce the amount of pieces.





TG Grade 3 Perimeters of Polygons

Tip: To turn text into a link, highlight the text, then click on a page or file from the list above.





Comments (0)
You don't have permission to comment on this page.