CONTACT CCSD21

999 West Dundee Road
Wheeling, Illinois 60090

Phone: 847-537-8270

Superintendent: Dr. Michael Connolly

School Board & Administration


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

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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

Number and Operations in Base Ten

Critical Content

Power Standards

  • Read, write, and compare (using <, =, >) decimals to thousandths. (5.NBT.3)
  • Use place value understanding to round whole numbers and decimals to any place. (5.NBT.4)
  • Add, subtract, multiply and divide with multi-digit whole numbers and with decimals to hundredths. (5.NBT.5-7)

 

Concepts and Skills

* Power Standard Content

  • * Read, write and compare decimals to thousandths
  • Identify place values in whole numbers and decimals
  • Describe the relationship between the value of a digit relative to the values of the digits on either side
  • * Round whole numbers and decimals to any place
  • * Add, subtract, multiply multi-digit numbers using standard algorithms
  • * Divide multi-digit numbers using models and strategies based on place value, properties of operations, and/or relationship between multiplication and division
  • * Add, subtract, multiply, divide decimals to hundredths
  • Make reasonable estimates for whole number and decimal addition, subtraction, multiplication and division problems

 

Critical Language

Language Usage

  • A student in fifth grade can demonstrate the ability to apply and comprehend critical language by explaining models of division, place value, and properties; describing the relationship between division and multiplication; and discussing and using efficient, accurate, and generalizable procedures to find quotients involving multi-digit dividends.

 

Content-Specific Vocabulary

  • Add
  • Subtract
  • Multiply
  • Divide
  • Sum
  • Difference
  • Product
  • Quotient
  • Remainder
  • Factor
  • Multiple
  • Decimal
  • Tenth
  • Hundredth
  • Thousandth
  • Place
  • Value
  • Whole number
  • Round
  • Digit
  • Multi-digit
  • Algorithm
  • Greater than
  • Less than
  • Equal

 

Process-Specific Vocabulary

  • Compare
  • Solve
  • Deduct
  • Interpret
  • Estimate

Concept-Based Connections

Essential Understandings

  • Situations require different number representations.
  • 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.
  • Multiple representations facilitate understanding and solving a problem.
  • Algebraic representations can be used to generalize patterns and relationships.
  • Place value is used to compare, order and perform operations with whole numbers and decimals.

 

Factual Guiding Questions

  • What role does place value play when comparing numbers?
  • What patterns can we identify in the place value of digits?
  • How does the position of a digit determine its value?
  • How can fractions and decimals be written in equivalent form?
  • What kinds of models can be used to represent fractions and decimals?
  • How are decimal numbers different from whole numbers?
  • What is the purpose of the decimal point?

 

Conceptual Guiding Questions

  • What is the relationship between addition and subtraction?
  • What is the relationship between multiplication and division?
  • What is the relationship between the value of a digit and the values of the digits on either side of it?
  • Why do we compare numbers?
  • Why use decimals?
  • How are whole numbers, fractions, decimals, and percents related?
  • How can counting, measuring, or labeling help to make sense of the world around us?
  • When would you use multi-digit multiplication of whole numbers?

 

Engaging/Debatable Guiding Questions

  • What situations in daily life can be represented by fractions? Decimals? Percents?
  • How would our world be different if our number system was based on 5 instead of 10?