# CONTACT CCSD21

Wheeling, Illinois 60090

Phone: 847-537-8270

Superintendent: Dr. Michael Connolly

# VISIT A SCHOOL

### CCSD21 is a school district comprised of 13 schools across 6 different communities in the northwest suburbs of Chicago.

VIEW BOUNDARY MAP

### BECOME A MEMBER OF THE SCHOOL DISTRICT 21 TEAM

School District 21 prides itself on its Professional Learning Community and its rich tradition of professional collaboration, high levels of professional development, and family-like atmosphere. If you see the opportunity to work with colleagues in making a difference in the lives of students and families in a truly diverse setting, School District 21 seeks your application.

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# Mathematics

## Operations and Algebraic Thinking

### Power Standards

• Write and evaluate numerical expressions (including those involving parentheses). (5.OA.1-2)

### Concepts and Skills

* Power Standard Content

• * Write and interpret numerical expressions including parentheses, brackets, braces
• Describe and apply properties of arithmetic
• * Evaluate expressions with parentheses, brackets, braces
• Extend, describe, and create numeric patterns

### Language Usage

• A student in fifth grade can demonstrate the ability to apply and comprehend critical language by comparing numerical expressions verbally and in writing.

### Content-Specific Vocabulary

• Subtract
• Multiply
• Divide
• Sum
• Difference
• Product
• Quotient
• Numerical expression
• Order of operations
• Bracket
• Parentheses
• Greater than
• Less than
• Equal
• Numeric patterns
• Sequence
• Rules

• Solve
• Evaluate
• Simplify
• Deduct
• Interpret
• Describe
• Create
• Extend

### Essential Understandings

• Problem solving is simplified by choosing efficient strategies and number representations.
• Numeric fluency includes both the understanding of and the ability to appropriately use numbers.
• Algebraic representations can be used to generalize patterns and relationships.

### Factual Guiding Questions

• What is the order of operations?

### Conceptual Guiding Questions

• How does evaluating numerical expressions lead to better problem solving?
• Why do mathematicians need to follow the order of operations?
• How can expressions look different but be equal?

### Engaging/Debatable Guiding Questions

• Is it always alright for two people to solve a problem in different ways? Why/why not?