Week 3

Outline

Overview

Session 1

Questions

What is density? Mass? Volume? How are they related?

Why should we make sand dense? How can we make sand denser?

What is sand compaction and sand densification?

Activities

Watch video on “Evaluate: Mass, Volume, and Density

Learner Hands-on Activity

Whole group discussion

Resources

Problem Solving Process

Evaluate: Mass, Volume, and Density Video

Relative Density of Soil Worksheet

Outcomes

Explain the terms “sand compaction” and “sand densification” in their own terms.

Explain that density of sand is defined as mass of the sand per volume of the sand.

Explain that patting the sand in a container will make the sand denser.

Calculate the sand density.

Session 2

Questions

How does sand support buildings?

Activities

Watch video on friction

Learner Hands-on Activity

Whole group discussion

Resources

Problem Solving Process

Video on friction

Sand in a Jar Worksheet

Sandpaper Boards Worksheet

Outcomes

Learners will explain that the particle interaction (friction and density) makes the sand strong.