Understanding the C-R-A Model in Math

The video introduces the CRA model, a three-step approach to teaching math concepts, consisting of Concrete, Representational, and Abstract stages. The model is widely adopted for its effectiveness. The video explains each stage, emphasizing the importance of fluidity between them. It provides examples of how the model is applied in schools, particularly in kindergarten and first grade, using problems involving apples and jelly beans. The video concludes by highlighting the flexibility of the model and the variety of tools available for each stage.

What does the 'C' in the C-R-A model stand for?

• Concrete

• Conceptual

• Calculative

• Cognitive

In the Concrete stage, what do students primarily use to solve math problems?

• Symbols

• Images

• Physical objects

• Equations

What is the main focus of the Representational stage in the C-R-A model?

• Manipulating objects

• Using numbers

• Solving equations

• Drawing pictures

Which stage involves using only numbers and symbols to solve math problems?

• Representational

• Concrete

• Abstract

• Conceptual

At what grade level are students formally introduced to the Abstract stage?

• First grade

• Third grade

• Second grade

• Kindergarten

In the problem with apples, how many apples are there in total?

• 13

• 10

• 11

• 12

In the jelly beans problem, how many more jelly beans does Nadia have than Ruben?

• 4

• 3

• 2

• 1

Which of the following is a method used in the Representational stage?

• Using counters

• Drawing strip diagrams

• Counting on fingers

• Writing equations

What is a 'ghost box' used for in the C-R-A model?

• To represent unknowns

• To store counters

• To draw pictures

• To write equations

Which of the following is true about the C-R-A model?

• It allows students to move back to previous stages if needed

• It is a rigid model with no flexibility

• It is only used in high school

• It only uses abstract symbols