ALEX Lesson Plans
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Title: Decimal Dilemmas: Carlos the Centipede is Adding Decimals!
Description:
In this lesson, students will work in collaborative/cooperative groups to understand adding decimals. Students will use decimal grids to represent the sum of decimals. Emphasis is on using placevalue, lining up the decimals and bringing the decimal down. Students will understand how important estimation of decimals is in reallife situations.
Standard(s): [MA2015] (6) 6: Fluently add, subtract, multiply, and divide multidigit decimals using the standard algorithm for each operation. [6NS3]
Subject: Mathematics (5  6)
Title: Decimal Dilemmas: Carlos the Centipede is Adding Decimals!
Description: In this lesson, students will work in collaborative/cooperative groups to understand adding decimals. Students will use decimal grids to represent the sum of decimals. Emphasis is on using placevalue, lining up the decimals and bringing the decimal down. Students will understand how important estimation of decimals is in reallife situations.
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Title: Decimal Dilemma: Carlos the Centipede is Subtracting Decimals!
Description:
In this lesson, students will work in collaborative/cooperative groups to understand subtracting decimals. Students will use decimal grids to represent the difference of decimals. Emphasis is on using placevalue, lining up the decimals and bringing the decimal down. Students will understand how important estimation of decimals is in reallife situations
Standard(s): [MA2015] (6) 6: Fluently add, subtract, multiply, and divide multidigit decimals using the standard algorithm for each operation. [6NS3]
Subject: Mathematics (5  6)
Title: Decimal Dilemma: Carlos the Centipede is Subtracting Decimals!
Description: In this lesson, students will work in collaborative/cooperative groups to understand subtracting decimals. Students will use decimal grids to represent the difference of decimals. Emphasis is on using placevalue, lining up the decimals and bringing the decimal down. Students will understand how important estimation of decimals is in reallife situations
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Title: Writing Decimals
Description:
This lesson gets students involved through the use of the calculator and computers. Students will have the opportunity to use calculators and computers to demonstrate knowledge of decimal place value and how to write decimal numbers to the tenth and hundredths place.
Standard(s): [MA2015] (5) 7: Use place value understanding to round decimals to any place. [5NBT4]
Subject: Mathematics (4  5), or Technology Education (3  5)
Title: Writing Decimals
Description: This lesson gets students involved through the use of the calculator and computers. Students will have the opportunity to use calculators and computers to demonstrate knowledge of decimal place value and how to write decimal numbers to the tenth and hundredths place.
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Title: It’s My Party!
Description:
Students will learn the value of money by planning their own birthday party. By using the Internet and a calculator, students will be given the opportunity for a practical reallife opportunity to solve a problem related to money exchange.
Standard(s): [MA2015] (5) 16: Solve realworld problems involving multiplication of fractions and mixed numbers, e.g., by using visual fraction models or equations to represent the problem. [5NF6]
Subject: Mathematics (3  5), or Technology Education (3  5)
Title: It’s My Party!
Description: Students will learn the value of money by planning their own birthday party. By using the Internet and a calculator, students will be given the opportunity for a practical reallife opportunity to solve a problem related to money exchange.
ALEX Multimedia
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Title: Multiplication Place Value Strategy
Overview:
Fourth grade students will explain the process and steps of an alternative way to solve multiplication problems. Students will explore this alternative algorithm that focuses on place value. Students will use their place value knowledge in order to break apart each number and solve for a product. Students will also use their knowledge of arrays to organize the steps of the problem.
Standard(s):
[MA2015] (5) 7: Use place value understanding to round decimals to any place. [5NBT4]
Multiplication Place Value Strategy Overview:
Fourth grade students will explain the process and steps of an alternative way to solve multiplication problems. Students will explore this alternative algorithm that focuses on place value. Students will use their place value knowledge in order to break apart each number and solve for a product. Students will also use their knowledge of arrays to organize the steps of the problem.
Thinkfinity Informational Materials
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Title: Number and Operations Web Links
Description:
This collection of Web links, reviewed and presented by Illuminations, offers teachers and students information about and practice in concepts related to arithmetic. Users can read the Illuminations Editorial Board's review of each Web site, or choose to link directly to the sites.
Standard(s): [MA2015] (5) 26: Classify twodimensional figures in a hierarchy based on properties. [5G4]
Subject: Mathematics Title: Number and Operations Web Links
Description: This collection of Web links, reviewed and presented by Illuminations, offers teachers and students information about and practice in concepts related to arithmetic. Users can read the Illuminations Editorial Board's review of each Web site, or choose to link directly to the sites. Thinkfinity Partner: Illuminations Grade Span: K,1,2,3,4,5,6,7,8,9,10,11,12
Thinkfinity Interactive Games
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Title: Communicating about Mathematics Using Games: Playing Fraction Tracks
Description:
Mathematical games can foster mathematical communication as students explain and justify their moves to one another. In addition, games can motivate students and engage them in thinking about and applying concepts and skills. This eexample from Illuminations contains an interactive version of a game that can be used in the grades 35 classroom to support students' learning about fractions. eMath Investigations are selected eexamples from the electronic version of the Principles and Standards of School Mathematics (PSSM). The eexamples are part of the electronic version of the PSSM document. Given their interactive nature and focused discussion tied to the PSSM document, the eexamples are natural companions to the iMath investigations.
Standard(s): [MA2015] (5) 26: Classify twodimensional figures in a hierarchy based on properties. [5G4]
Subject: Mathematics Title: Communicating about Mathematics Using Games: Playing Fraction Tracks
Description: Mathematical games can foster mathematical communication as students explain and justify their moves to one another. In addition, games can motivate students and engage them in thinking about and applying concepts and skills. This eexample from Illuminations contains an interactive version of a game that can be used in the grades 35 classroom to support students' learning about fractions. eMath Investigations are selected eexamples from the electronic version of the Principles and Standards of School Mathematics (PSSM). The eexamples are part of the electronic version of the PSSM document. Given their interactive nature and focused discussion tied to the PSSM document, the eexamples are natural companions to the iMath investigations. Thinkfinity Partner: Illuminations Grade Span: 3,4,5

