# Expression Exchange

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### Contidos

• Equivalent Expressions
• Evaluating Expressions
• Simplifying Expressions

### Description

Build coin expressions, then exchange them for variable expressions. Simplify and evaluate expressions until you are ready to test your understanding of equivalent expressions in the game!

### Obxectivos de Aprendizaxe

• Simplify expressions by combining like-terms
• Contextualize coefficients and like/unlike-terms
• Interpret an expression in both abstract and concrete representations
• Build an expression that is equivalent to a target

### Standards Alignment

#### Common Core - Math

3.OA.A.1
Interpret products of whole numbers, e.g., interpret 5 × 7 as the total number of objects in 5 groups of 7 objects each. For example, describe a context in which a total number of objects can be expressed as 5 × 7.
5.OA.A.1
Use parentheses, brackets, or braces in numerical expressions, and evaluate expressions with these symbols.
6.EE.A.2
Write, read, and evaluate expressions in which letters stand for numbers.
6.EE.A.2b
Identify parts of an expression using mathematical terms (sum, term, product, factor, quotient, coefficient); view one or more parts of an expression as a single entity. For example, describe the expression 2 (8 + 7) as a product of two factors; view (8 + 7) as both a single entity and a sum of two terms.
6.EE.A.3
Apply the properties of operations to generate equivalent expressions. For example, apply the distributive property to the expression 3 (2 + x) to produce the equivalent expression 6 + 3x; apply the distributive property to the expression 24x + 18y to produce the equivalent expression 6 (4x + 3y); apply properties of operations to y + y + y to produce the equivalent expression 3y.
6.EE.A.4
Identify when two expressions are equivalent (i.e., when the two expressions name the same number regardless of which value is substituted into them). For example, the expressions y + y + y and 3y are equivalent because they name the same number regardless of which number y stands for..
Version 1.1.14

### Teacher Tips

 A guía de profesores (pdf) contén consellos creados polo equipo PhET. ( PDF ).

### Teacher-Submitted Activities

Games Remote Lesson ideas Trish Loeblein U-Inicio
BAC
11
S.O.
Deb
Remote
Química
Matemáticas
Física
Adding and Subtracting Expressions Amanda McGarry S.O. Guided Matemáticas
Algebraic Expressions Amanda McGarry S.O. Guided Matemáticas
Generating Equivalent Expressions Amanda McGarry S.O. Guided Matemáticas
Comparando expresiones equivalentes Pam Branner, traducción de Diana López S.O.
BAC
Guided Matemáticas
Equivalent Expression Exploration Kimberly Struck S.O. Guided Matemáticas
Like Terms and How to Combine Them Julie Carres S.O. Guided Matemáticas
Comparing Equivalent Expressions Pam Brenner S.O.
BAC
Guided Matemáticas
Middle School Math Sim Alignment Amanda McGarry S.O. Outro Matemáticas
SECUNDARIA: Alineación PhET con programas de la SEP México (2011 y 2017) Diana López S.O.
BAC
Outro Matemáticas
Física
Química
Bioloxía
PREPARATORIA: Alineación de PhET con programas de la DGB México (2017) Diana López U-Inicio
BAC
Outro Matemáticas
Química
Física
Adierazpen baliokideak alderatzea José Manuel López Irastorza BAC Guided Matemáticas
Variables and Coefficients Lisa Nitzsche 11
S.O.
Guided
Discuss
Matemáticas
Adding Negations Julie Carres S.O. Guided Matemáticas
Modelo de Áreas, Cambio de Expresiones Andrés Gualberto Palomo Cuevas BAC Remote
Deb
Matemáticas
Continuación de Cambio de Expresiones Andrés Gualberto Palomo Cuevas BAC Outro
Deb
Matemáticas
Cambio de Expresiones Andrés Gualberto Palomo Cuevas BAC Remote
Deb
Matemáticas
Albanian All shqip Shkëmbimi i shprehjes
Arabic All العربية استبدال العبارات الجبرية
Bosnian All Bosanski Novčići (Algebarski izrazi)
Chinese (China) All 中文 (中国) 表达式变换
Chinese (Taiwan) All 中文 (台灣) Expression Exchange_代數的表示法
Croatian All hrvatski Algebarski izrazi
Danish All Dansk Ændring af udtryk
Dutch All Nederlands Uitdrukkingen omwisselen
Finnish All suomi Lausekkeen vaihto
French All français Échange d'expression
German All Deutsch Terme Komponieren
Greek All Ελληνικά Αριθμητικές παραστάσεις
Hebrew All עברית שיוויון ביטויים מתמטיים
Italian All italiano Espressioni
Japanese All 日本語 代数式を作ろう
Kazakh All Kazakh Рационал өрнектер
Korean All 한국어 식 교환
Latvian All Latviešu Izteiksmes
Maori All Maori Whakawhitiwhiti Whārite
Marathi All मराठी पदावली शोध
Mongolian All Монгол (Монгол) Шуурхай Өөрчлөх
Norwegian Bokmål All Norsk bokmål Veksle utttrykk
Persian All فارسی جابجایی عبارت ریاضی
Polish All polski Wyrażenia algebraiczne
Portuguese (Brazil) All português (Brasil) Expressões
Russian All русский Рациональные выражения
Serbian All Српски Новчићи (Алгебарски изрази)
Spanish All español Cambio de Expresiones
Spanish (Mexico) All español (México) Cambio de Expresiones
Spanish (Peru) All español (Perú) Cambio de Expresión
Swedish All svenska Arbeta med Uttryck
Ukrainian All українська Перетвори вираз
Vietnamese All Tiếng Việt Biểu thức

HTML5 sims can run on iPads and Chromebooks, as well as PC, Mac, and Linux systems.

iOS 12+ Safari

Android:
Not officially supported. If you are using the HTML5 sims on Android, we recommend using the latest version of Google Chrome.

Chromebook:
The HTML5 and Flash PhET sims are supported on all Chromebooks.
Chromebook compatible sims

Windows Systems:

Macintosh Systems:

Linux Systems:

Equipo de Deseño Biliotecas externas Agradecementos
• John Blanco (developer)
• David Webb
• Kathy Perkins
• Ariel Paul
• almond-0.2.9.js
• base64-js-1.2.0.js
• easing-equations-r12
• FileSaver-b8054a2.js
• font-awesome-4.5.0
• game-up-camera-1.0.0.js
• himalaya-0.2.7.js
• jama-1.0.2
• jquery-2.1.0.js
• lodash-4.17.4.js
• pegjs-0.7.0.js
• seedrandom-2.4.2.js
• text-2.0.12.js
• TextEncoderLite-3c9f6f0.js
• Tween-r12.js