**Title:** Pizza Problems: An Angle Investigation

**Description:**
This investigative lesson allows students to identify angle measurements as part of a larger angle. Students will deconstruct 180 degree angles into equal parts.
This is a College- and Career-Ready Standards showcase lesson plan.
**Standard(s): **

[MA2015] (4) 25:

**Subject:**Mathematics (4)

**Title:**Pizza Problems: An Angle Investigation

**Description:**This investigative lesson allows students to identify angle measurements as part of a larger angle. Students will deconstruct 180 degree angles into equal parts. This is a College- and Career-Ready Standards showcase lesson plan.

**Title:** Another Look at Fractions of a Set

**Description:**
In this lesson, one of a multi-part unit from Illuminations, students identify fractions in real-world contexts from a set of items that are not identical. Students develop skills in problem-solving and reasoning as they think about their set and how to create new sets given specific fractional characteristics.
**Standard(s): **

[MA2015] (5) 24:

**Subject:**Mathematics

**Title:**Another Look at Fractions of a Set

**Description:**In this lesson, one of a multi-part unit from Illuminations, students identify fractions in real-world contexts from a set of items that are not identical. Students develop skills in problem-solving and reasoning as they think about their set and how to create new sets given specific fractional characteristics.

**Thinkfinity Partner:**Illuminations

**Grade Span:**3,4,5

**Title:** The Variable Machine

**Description:**
This Illuminations lesson provides an introduction to the use of variables. Students explore the idea of variable as a symbol that can stand for any member of a set of numbers, and they substitute numbers for variables (letters) to discover unknown values.
**Standard(s): **

[MA2015] (5) 6:

^{1}/

_{10}) + 9 x (

^{1}/

_{100}) + 2 x (

^{1}/

_{1000}). [5-NBT3a]

**Subject:**Mathematics

**Title:**The Variable Machine

**Description:**This Illuminations lesson provides an introduction to the use of variables. Students explore the idea of variable as a symbol that can stand for any member of a set of numbers, and they substitute numbers for variables (letters) to discover unknown values.

**Thinkfinity Partner:**Illuminations

**Grade Span:**3,4,5

**Title:** Parker's Pizza Additive Angle Activity

**Description:**
This learning activity should be used at the end of a lesson on recognizing angle measure as additive. The students will find missing angle measurements using a real-world problem. This learning activity can be used as an assessment.
This activity results from the ALEX Resource Gap Project.
**Standard(s): **

[MA2015] (4) 25:

**Subject:**Mathematics (4)

**Title:**Parker's Pizza Additive Angle Activity

**Description:**This learning activity should be used at the end of a lesson on recognizing angle measure as additive. The students will find missing angle measurements using a real-world problem. This learning activity can be used as an assessment. This activity results from the ALEX Resource Gap Project.

**ALEX Learning Activities: 1**

**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:

**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

**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 e-example from Illuminations contains an interactive version of a game that can be used in the grades 3-5 classroom to support students' learning about fractions. e-Math Investigations are selected e-examples from the electronic version of the Principles and Standards of School Mathematics (PSSM). The e-examples are part of the electronic version of the PSSM document. Given their interactive nature and focused discussion tied to the PSSM document, the e-examples are natural companions to the i-Math investigations.
**Standard(s): **

[MA2015] (5) 26:

**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 e-example from Illuminations contains an interactive version of a game that can be used in the grades 3-5 classroom to support students' learning about fractions. e-Math Investigations are selected e-examples from the electronic version of the Principles and Standards of School Mathematics (PSSM). The e-examples are part of the electronic version of the PSSM document. Given their interactive nature and focused discussion tied to the PSSM document, the e-examples are natural companions to the i-Math investigations.

**Thinkfinity Partner:**Illuminations

**Grade Span:**3,4,5