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eEx_5.1.1 ICON
Number and Operations

5.1.1 Playing Fraction Tracks

3-5
Think about how fractions are related to a unit whole, compare fractional parts of a whole, and find equivalent fractions.
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Number and Operations

5.1.2 The Role of the Teacher

3-5
Two video clips illustrate communication about mathematics among a teacher and her students.
eEx_5.1.3 ICON

5.1.3 Communication among Students

3-5
Use communication as a tool to deepen their understanding of mathematics.
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5.1.4 Reflecting on Practice

3-5
The teacher reflects on her own mathematical learning.
eEx_5.2.1 ICON
Algebra

5.2.1 Distance, Speed, and Time Relationships Using Simulation Software

3-5
Use a software to simulate two runners along a track.
eEx_5.3.1 ICON
Geometry

5.3.1 Exploring Properties of Rectangles and Parallelograms Using Dynamic Software

3-5
Explore geometric relationships and make and test conjectures.
eEx_6.1.1 ICON
Number and Operations

6.1.1 Learning about Multiplication Using Dynamic Sketches of an Area Model

6-8
Visualize the effects of multiplying a fixed positive number by positive numbers greater than 1 and less than 1.
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Algebra

6.2.1 Constant Cost Per Minute

6-8
Explore the total cost when the cost per minute for phone use remains constant over time.
eEx_6.2.2 ICON
Algebra

6.2.2 Changing Cost per Minute

6-8
Explore the total cost when the cost per minute for phone use changes after the first sixty minutes of call.
eEx_6.3.1 ICON
Geometry

6.3.1 Side Length and Area of Similar Figures

6-8
Learn about how the side lengths, perimeters, and areas of the two similar rectangles are related.