View Standards
**Standard(s): **
[MA2015] (6) 13 :

13 ) Write, read, and evaluate expressions in which letters stand for numbers. [6-EE2]

a. Write expressions that record operations with numbers and with letters standing for numbers. [6-EE2a]

Example: Express the calculation, "Subtract *y* from 5," as 5 - *y*.

b. 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. [6-EE2b]

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.

c. Evaluate expressions at specific values of their variables. Include expressions that arise from formulas used in real-world problems. Perform arithmetic operations, including those involving whole-number exponents, in the conventional order when there are no parentheses to specify a particular order (Order of Operations). [6-EE2c]

Example: Use the formulas *V* = *s*^{3} and *A* = 6*s*^{2} to find the volume and surface area of a cube with sides of length *s* = ^{1}/_{2}.

In this learning activity, students will create a Voki as a creative, easy-to-use tool that will help motivate students, improve lesson comprehension, and student participation. Students will use a Voki to define key mathematical terms ( factors, sum, terms, product, quotient, coefficients) needed to identify parts of an expression.

*This alignment is a result of the ALEX Resource Development Summit.*

View Standards
**Standard(s): **
[MA2015] (6) 13 :

[MA2015] (6) 17 :

13 ) Write, read, and evaluate expressions in which letters stand for numbers. [6-EE2]

a. Write expressions that record operations with numbers and with letters standing for numbers. [6-EE2a]

Example: Express the calculation, "Subtract *y* from 5," as 5 - *y*.

b. 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. [6-EE2b]

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.

c. Evaluate expressions at specific values of their variables. Include expressions that arise from formulas used in real-world problems. Perform arithmetic operations, including those involving whole-number exponents, in the conventional order when there are no parentheses to specify a particular order (Order of Operations). [6-EE2c]

Example: Use the formulas *V* = *s*^{3} and *A* = 6*s*^{2} to find the volume and surface area of a cube with sides of length *s* = ^{1}/_{2}.

[MA2015] (6) 17 :

17 ) Use variables to represent numbers, and write expressions when solving a real-world or mathematical problem; understand that a variable can represent an unknown number or, depending on the purpose at hand, any number in a specified set. [6-EE6]

In this activity, students will be writing equations using variables that represent different food items. They will develop the foundational understanding of variables being used as a symbol to represent a number. They will also write expressions using variables and then evaluate the expressions at specific values for the variables.

*This activity was created as a result of the ALEX Resource Development Summit.*