Measurement
In Grade 3, students develop their understanding of standard units and processes for measuring various attributes such as length, mass, capacity, area, perimeter, and time. They learn to select appropriate tools, estimate measurements, and solve problems involving measurement.
Grade Three Expectations for Measurement
Essential Learning Outcome 1: Understanding Length, Perimeter, and Area
- Estimate, measure, and record length, height, and distance using standard units (cm, m, km)
- Compare and order objects by length, height, or distance
- Estimate, measure, and record the perimeter of regular and irregular shapes
- Estimate, measure, and record area using non-standard and standard square units
- Understand the relationship between perimeter and area
- Select and use appropriate tools for measuring length, perimeter, and area
Specific Curriculum Outcomes
By the end of Grade Three, the learner will be expected to:
Inclusive Assessment Strategies
Assessment strategies that provide information about learning:
- Observations: Teacher observations during measurement activities, noting students' technique, accuracy, and understanding of measurement concepts
- Conversations: Student explanations of their measurement strategies, estimations, and reasoning
- Products: Student work samples, including recorded measurements, calculations, and problem-solving involving measurement
Sample Assessment Tools:
- Observation checklists for measurement techniques and tool use
- Rubrics for evaluating student understanding of measurement concepts
- Performance tasks involving real-world measurement problems
- Exit tickets to assess daily learning objectives
- Measurement journals for recording estimates, measurements, and reflections
Inclusive Learning Strategies
Additional Resources and Materials
For Teachers
- Rulers, tape measures, meter sticks, and trundle wheels
- Scales, balances, and weights
- Measuring cups, beakers, and graduated cylinders
- Demonstration clocks and thermometers
- OECS Grade 3 Mathematics Curriculum Guide
For Students
- Individual rulers and measuring tapes
- Grid paper and square tiles for area activities
- Individual clocks for time practice
- Measurement conversion charts and reference tools
- Measurement journals for recording estimates and measurements
Teacher Content Knowledge
Measurement in Grade 3 builds upon students' earlier experiences with non-standard units and introduces more formal work with standard units. Students develop a deeper understanding of the attributes being measured (length, area, mass, capacity, time, temperature) and the units and tools used to measure them. They learn to select appropriate units and tools, estimate measurements, and solve problems involving measurement. Through hands-on experiences and real-world applications, students develop measurement sense and an understanding of the importance of measurement in everyday life.