**Benchmark
9B: The Mathematical World - Symbolic Relationships**
**(grades 3-5, page 218)**
Mathematical statements using symbols may be true only when the symbols
are replaced by certain numbers. (1 of 2)
Standard 13-3 page 60, Grades K-4

Explore the use of variables and open sentences to express relationships
Standard 9-1, page 102, Grades 5-8

Understand the concepts of variable, expression, and equation

Tables and graphs can show how values of one quantity are related to values
of another. (2 of 2)
Standard 13-2 page 60, Grades K-4

Represent and describe mathematical relationships
Standard 8-2, page 98, Grades 5-8

Describe and represent relationships with tables, graphs, and rules