Geometry and Measurement
Third Grade

STATE GOAL 7: Estimate, make and use measurements of objects, quantities and relationships and determine acceptable levels of accuracy. 
STATE GOAL 9: Use geometric methods to analyze, categorize and draw conclusions about points, lines, planes and space.
Topics Mastered

Resources           

  • Two and three dimensional shapes
  • Characteristics, similarities, and differences of geometric shapes
  • Symmetry
  • Values and relationships among coins
  • Addition and subtraction problems using currency up to $10.00
  • Time
  • Perimeter and area
  • Measure using a ruler
  • Ordered pair on a grid
  • Movement of figures

 

Harcourt Brace Math Advantage

AAA Math

 

Students will be able to demonstrate:  
  • identifying, describing, and creating physical models of two-dimensional shapes
  • identifying, describing, and creating three dimensional shapes
  • sorting, classifying, and comparing familiar shapes
  • constructing symmetrical figures using various concrete material
  • identifying and comparing combinations of coins and bills
  • making change to $10.00
  • adding and subtracting currency
  • telling time to the minute on an analog and digital clock
  • determining elapsed time
  • determining perimeter and area using concrete materials
  • determining the distance between two points using a ruler
  • identifying images resulting from flips, slides, and turns
  • locating ordered pairs on a grid
 
Topics Introduced
  • Similar and congruent geometric figures
  • Conclusions and reasoning about simple geometric figures and patterns
  • Reflective symmetry
  • Angles
  • Length, capacity, weight, mass, and temperature
  • Parallel lines
  • Appropriate unit for a measurement task
  • Volume
  • Conversion of time and length
  • Estimation of measurement
 
Students will practice:  
  • differentiating between similar and congruent geometric figures
  • making conclusions and reasoning about simple geometric figures and patterns
  • completing the second half of a given shape
  • identifying right, obtuse and acute angles
  • measuring length, capacity, weight, mass, and temperature
  • identifying parallel lines
  • selecting and using appropriate units for a measurement task
  • determining the volume of a solid figure that shows cubic units
  • comparing and estimating length including perimeter, area, and weight/mass
  • solving problems involving simple unit conversions within the same measurement system for time and length
 
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Last updated September 2005
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