Changing the Area asks students to explore both area and perimeter using Base Ten Blocks. The task asks third grade students to arrange Base Ten Blocks in different ways to preserve area and change perimeter, then to preserve perimeter and change area. The task uses little argumentation language but asks students to explain reasoning and discoveries. Students are also asked to critique a student’s claim by agreeing or disagreeing and providing explanation.
Microsoft Word version: 3_MD_MeasurementPerimeter_Problem_Critique_ChangingTheArea
PDF version: 3_MD_MeasurementPerimeter_Problem_Critique_ChangingTheArea
How Many Perimeters is an argumentative task designed for third graders that utilizes visual thinking, hands-on interaction, and divergent thinking, with modifications provided. Students are asked to use algebra tiles to determine if all shapes created with the same three tiles will have the same perimeter. Argumentative language, such as constructing a claim and providing evidence, are heavily used throughout the bulleted and multi-part task, and students are asked to work in teams and share their claims with the class.
Microsoft Word version: 3_MD_MeasurementPerimeter_Problem_Construct_HowManyPerimeters
PDF version: 3_MD_MeasurementPerimeter_Problem_Construct_HowManyPerimeters