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2nd Grade Unit 6: / Geometry / Suggested Time Frame: / 12 days
TAKS Objectives: / 3 / TEKS: / 2.7A, 2.7B, 2.7C
Unit Overview
In thisunit, students will find that shapes can be combined or taken apart to make new shapes. Students will find similarities and differences of shapes and begin to classify according to attributes.
Enduring Understandings
  • Shapes are found in the real world.
  • Shapes have attributes.
  • Attributes show how shapes are alike and different.
  • Shapes can be cut apart to make new shapes.
/ Essential Questions
  • Where can shapes be found?
  • How are shapes alike?
  • How are shapes different?
  • How can shapes be described?
  • How can shapes be changed to other shapes?
/ Mathematics Skills/Process
2.12Underlying processes and mathematical tools. The student applies Grade 2 mathematics to solve problems connected to everyday experiences and activities in and outside of school. The student is expected to:
2.12Aidentify the mathematics in everyday situations;
2.12Bsolve problems with guidance, that incorporates the process of understanding the problem, making a plan, carrying out the plan, and evaluating the solution for reasonableness
Including
  • Use manipulatives to represent problem situations.
  • Encourage different ways to solve a problem.
  • Have students verbalize observations.
2.12Cselect or develop an appropriate problem-solving plan or strategy including drawing a picture, looking for a pattern, systematic guessing and checking, or acting it out in order to solve a problem
Including
  • Encourage different ways to solve a problem
2.12Duse tools such as real objects, manipulatives, and technology to solve problems.
2.13Underlying processes and mathematical tools. The student communicates about Grade 2 mathematics using informal language. The student is expected to:
2.13Aexplain and record observations using objects, words, pictures, numbers, and technology; and
2.13Brelate informal language to mathematical language and symbols.
2.14Underlying processes and mathematical tools. The student uses logical reasoning.
2.14AThe student is expected to justify his or her thinking using objects, words, pictures, numbers, and technology.
(Ask: “How do you know that is the answer? If someone said they didn’t think it was right, how could you convince them?”)
Facts
  • Find shapes in the real world.
  • Describe attributes of shapes
  • Understand that shapes can be changed
  • Construct new shapes by cutting shapes apart
/ Relationships and/or Connections that should emerge
  • A graph can organize data so it can be interpreted quickly.

Language of Instruction
attributes / atributos
base / base
circle / circulo
circular face / cara circular
closed figure / figura cerrada
cone / cono
cube / cubo
curved / curvada
cylinder / cilindro
edges / aristas
face / cara
flat / plano
geometry / geometria
hexagon / hexogano
horizontal / horizontal
line of symmetry / eje de simetria
lines / lineas
octagon / octogano
open figure / figura abierta
pentagon / pentogano
plane shapes / figuras planas
polygon / poligono
pyramid / piramide
quadrilateral / cuadrilateo
rectangle / rectanguo
rectangular prism / prisma rectangular
rhombus / rombo
roll / rodar
round / redondear
sides / lados
slide / deslizar
solids / solidos
space shapes / figuras tri-dimensionales
sphere / esfera
square / cuadrao
symmetry / simetria
three-dimensional / tri-dimensional
trapezoid / trapecio
triangle / triangulo
triangular prism / prisma triangular
two-dimensional / di-dimensional
vertex / vertice
vertical / vertical
vertices / vertices
/ Products students will develop
  • A quilt square (1 inch graph paper),
    MLC, Volume 2 Unit 4, Session 14,
    pg. 408

Mathematical Connections to Literature
There’s a Nightmare in My Closet
by Mercer Mayer
How Many Teeth
By Paul Showers
Grandfather Tang’s Story
By Ann Tompert
The Quilt
By Ann Jonas
The Greedy Triangle
By Marilyn Burns
The Silly Story of Goldilocks and the Three Squares
By Grace Maccarone
2nd Grade Unit 6: / Geometry / Suggested Time Frame: / 12 days
TAKS Objectives: / 3 / TEKS: / 2.7A, 2.7B, 2.7C
Unit Overview
In thisunit, students will find that shapes can be combined or taken apart to make new shapes. Students will find similarities and differences of shapes and begin to classify according to attributes.
Text Resources
Investigations
Shapes, Halves and Symmetry
MathLearningCenter
Volume 2, Unit 4
Silver Burdett Ginn
Motivation Math
Math Essentials
Vocabulary Adventure / Technology & Electronic Resources
Other(i.e., Speakers, Field Trips) / Method(s) of Assessment
Observation
AObservation evaluated by peers
BStudents engaged in learning activities
CDirect questioning
DObservation of performance or process
Constructed Response
  1. TEKSCheck
Assessment Sourcebook: End-Of Unit Assessment Tasks
  1. Open-ended
  2. Essay
  3. Research Paper
  4. Log / Journal
  5. Story / Play / Poem
  6. Model / Map / Video
  7. Oral / Visual / Multimedia Presentation
Selected Response
1Fill-in-the-blank test
2Matching test
3Multiple choice test
4True/False test
Collaborative Student Explorations
Look at the roll of paper towels.

Find the object that has a different shape than the roll of paper towels has. Mark the object that has a different shape than the roll of paper towels has.

Second Grade Mathematics Unit 6 Overview

In this brief summary, the days will fluctuate according to your students, calendar, and special events.

Communication

Unit Six: Geometry

Suggested 12 days

  • 2-Dimensional Shapes
  • 3-Dimensional Shapes
  • New shapes: combine and take apart
  • Classify according to attributes.

8/27/2007DRAFT 3