In there they also list learning objectives (See some below):
Learning Objective 5: The student can describe the combination of abstractions used to represent data.

Learning Objective 7: The student can develop an abstraction.

Learning Objective 8: The student can use multiple levels of abstraction in
computation.

Learning Objective 9: The student can use models and simulations to raise and answer questions. [P3]

Evidence for Learning Objective 9: Student work is characterized by:
9a. Use of models and simulations to generate new understanding and knowledge.
9b. Use of different levels of abstraction to represent phenomena.
9c. Use of models and simulations to formulate, refine, and test hypotheses.
9d. Use of simulations to facilitate testing of models.

In thinking about this I am thinking of using some “worked examples” with the kids where I walk them up and down the ladder. And then perhaps ask them to explain (or facilitate their explanations) of the abstractions used in video games.

This is from csprinciples.org: Learning Objectives and Evidence Statements (found here: https://docs.google.com/file/d/0B60yN79VbSzTNTJiMTM5NDUtMDNhOS00ZjVhLWIxYWMtZWMxNjQzYzk5ZDFi/edit)

non-math person: “Math is so abstract.” i.e. “hard to understand”

math person: We abstract *in order to understand.*

Part of our job is to teach people this latter mentality.