Big Idea 2: BIG IDEA 2Archived

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Develop an understanding of decimals, including the connection between fractions and decimals.
General Information
Number: MA.4.A.2
Title: BIG IDEA 2
Type: Big Idea
Subject: X-Mathematics (former standards - 2008) - Archived
Grade: 4
Body of Knowledge: Algebra

Related Benchmarks

This cluster includes the following benchmarks.

Related Access Points

This cluster includes the following access points.

Independent

MA.4.A.2.In.a
Apply the concepts of counting, grouping, and place value with whole numbers to create sets of tens and ones to identify the value of whole numbers to 50.
MA.4.A.2.In.b
Express and represent fractions, including halves and fourths, as parts of a whole and parts of a set using objects, pictures, and number names.
MA.4.A.2.In.c
Identify differences between halves, fourths, and a whole.

Supported

MA.4.A.2.Su.a
Apply the concept of grouping to create sets of tens and ones to 18 as a strategy for counting objects.
MA.4.A.2.Su.b
Represent half and whole using area and sets of objects.
MA.4.A.2.Su.c
Identify half as a part of a whole.

Participatory

MA.4.A.2.Pa.a
Match objects to marked spaces to show one-to-one correspondence for quantities 1 to 4.
MA.4.A.2.Pa.b
Distinguish parts of objects from whole objects.
MA.4.A.2.Pa.c
Recognize a half of an object as part of the whole object.

Related Resources

Vetted resources educators can use to teach the concepts and skills in this topic.

Image/Photograph

Clipart ETC Fractions:

Illustrations that can be used for teaching and demonstrating fractions. Fractional representations are modeled in wedges of circles ("pieces of pie") and parts of polygons. There are also clipart images of numerical fractions, both proper and improper, from halves to twelfths. Fraction charts and fraction strips found in this collection can be used as manipulatives and are ready to print for classroom use.

Type: Image/Photograph

Lesson Plans

Happy Healthy School Lunch:

In this MEA students are asked by the school cafeteria manager to assist her in creating healthier school lunch menus. The students need to keep in mind both nutritional and cost guidelines. Students will develop a procedure to select school lunches.

Model Eliciting Activities, MEAs, are open-ended, interdisciplinary problem-solving activities that are meant to reveal students’ thinking about the concepts embedded in realistic situations. MEAs resemble engineering problems and encourage students to create solutions in the form of mathematical and scientific models. Students work in teams to apply their knowledge of science and mathematics to solve an open-ended problem, while considering constraints and tradeoffs. Students integrate their ELA skills into MEAs as they are asked to clearly document their thought process. MEAs follow a problem-based, student centered approach to learning, where students are encouraged to grapple with the problem while the teacher acts as a facilitator. To learn more about MEA’s visit: https://www.cpalms.org/cpalms/mea.aspx

Type: Lesson Plan

Cookies and Treats:

Fourth graders will help Cookies and Treats find cost-effective and eco-friendly packaging for its cookies. Students will organize data and compare prices using decimal notation in order to develop a procedure for choosing packaging for cookies.  Students will use multiplication and division of whole numbers to plan for how many packages to order.

Model Eliciting Activities, MEAs, are open-ended, interdisciplinary problem-solving activities that are meant to reveal students’ thinking about the concepts embedded in realistic situations. Click here to learn more about MEAs and how they can transform your classroom.

Type: Lesson Plan

Dynamic Decimals, Fractions and Money!:

This lesson is a practice lesson for student’s knowledge on connecting decimals, money and fractions. 

Type: Lesson Plan

Virtual Manipulative

Fraction Models:

An interactive tool to represent a fraction circle, rectangle, or set model with numerators and denominators ranging from 1 to 100. The decimal and percent equivalents of the created fraction are also displayed.

Type: Virtual Manipulative

Student Resources

Vetted resources students can use to learn the concepts and skills in this topic.

Parent Resources

Vetted resources caregivers can use to help students learn the concepts and skills in this topic.

Image/Photograph

Clipart ETC Fractions:

Illustrations that can be used for teaching and demonstrating fractions. Fractional representations are modeled in wedges of circles ("pieces of pie") and parts of polygons. There are also clipart images of numerical fractions, both proper and improper, from halves to twelfths. Fraction charts and fraction strips found in this collection can be used as manipulatives and are ready to print for classroom use.

Type: Image/Photograph