Unit 1 exam information

I haven't written the exam yet, so I don't know how long it is, or if it will be in one part or two, but the content you need to study and know is:

Relational thinking:

How to solve an unknown number equation by reasoning about relationships between the numbers on the two sides of the equals sign. Examples:**

Correct use of the equals sign.

Know how children learn to count.

Know the CGI problem type organization for problems for addition, subtraction, multiplication and division


Result Unknown: JRU

Change Unknown: JCU

Start Unknown: JSU


Result Unknown: SRU

Change Unknown: SCU

Start Unknown: SSU


Whole Unknown: PPW-WU

Part Unknown: PPW-PU


Difference Unknown: CDU

Compare Quantity Unkown: CQU

Referent Unknown: CRU




Measurement Division

Partitive Division













Multiplicative Comparison




Know which addition and subtraction types are more difficult than the others (from a direct modeling standpoint). I will ask you to put in order of difficulty some word problems that have different problem types. The problem types will be ones where the difference in difficulty of the problem type is clear. You may find this summary helpful if you don't have good notes on this.

Direct modeling

Given a word problem that has an associated direct modeling strategy (multiplication, partitive division, measurement division, JRU, SRU, JCU, SCU, CDU)

Vocabulary: From a number problem or word problem be able to identify and name the parts of the problem sum, difference, minuend, etc.)

Arrays for multiplication:

Counting and derived fact strategies for basic facts.

Fact families: Write the fact family for an addition, subtraction, multiplication or division problem.


**Answers to example problems