Date:
September 8, 2014
Lesson Focus:
Unit Name:
Objectives:
Recognizing Expressions
Demonstrating Patterns Using Multiple Representations
The students will be able to identify a variable, term, constant,
coefficient, and an algebraic expression.
ALGI.1D: Represent relationships among quantities by using and
building concrete models, completing tables, constructing graphs
or diagrams, writing verbal descriptions, and writing equations and
inequalities.
ALGI.1A: Use manipulatives, drawings, verbal descriptions, and
symbols to represent unknowns and variables in real-world
situations.
TEKS Standards:
Key Vocabulary: What key terms will my students need to understand?
Variable, variable expression, constant, coefficient
Assessment Plan:
Lesson Cycle:
Engage and Connect: How will I engage my students in learning? How will I
lead my students to mastery?
The teacher/students will…
Warm Up on Kahoot using word problems (Quiz created on Kahoot)
1. Fifty-four out of 180 customers said that cookie dough was their
favorite flavor. What fraction of customers was this?
2. Jolon needs to fence a garden. The dimensions of the garden are 6
meters by 4 meters. How much fencing does Jolon need to
purchase?
3. A board measuring 7.2 feet must be cut into three equal pieces.
Find the length of each piece.
Introduce New Learning
The teacher will (I do)…
A variable can stand for what? (‘anything’ or in math a number) Variables
are place holdings, like a zero in front of a decimal, or like a substitute
player in a football game.
Variable – a letter that is used in place of a number. Sometimes, the
variable will be given a value. This value will replace the variable in order to
_5__min
Materials:
Cell
phones,
projector,
laptop
_10__min
Materials:
LCD
Projector,
laptop,
PPT
solve the equation. Other times, the variable is not assigned a value and
the student is to solve the equation to determine the value of the variable.
Algebraic (variable) expression – a group of numbers, variables, and
operations. It
Constant - a number that stands by itself. The 7 in our previous vocabulary
term is an example of a constant.
Term — each part of an expression that is separated by an operation. For
instance, in our earlier example n + 7, the terms are n and 7.
Coefficient—a number in front of and attached to a variable. For example,
in the expression 8x + 3, the 8 is the coefficient.
Guided Practice:
The teacher/students will… (We do)
GP 1 - Introduce the terms: Ask students what they think each term means
and have them write their definitions on chart paper and stick them up
around to room for the class to see. . If the correct definition is on the
chart paper, have students vote on which definition they think is correct.
Give them the appropriate definition and have them record the definitions
in their interactive notebooks.
Teacher - Demonstrate three ways to write a word phrase for x + 2 (x plus
2, a number increased by 2, the sum of 2 and a number)
Teacher - Give an example for subtraction: a number subtracted from 10.
[Students will give x -10]. Have students substitute a number for the
variable to see if it makes sense.
GP 2 – Teacher – Write the following problems on chart paper:
1.
2.
3.
4.
5.
6.
Four more than s shirts
The sum of t TVs and 11 TVs
Five times your quiz score q
Two less than m mice
Number of seconds in n minutes
The length of a rectangle is 7 inches more than twice its width, w
Students – will circulate around the room to each chart paper and write an
algebraic expression for each word phrase. They will have one minute at
each one.
_35__min
Materials:
Independent Practice:
The students will…(You do)
_10_min
Materials:
Using 5 and d, write four variable expressions using the four operations,
then rewrite the variable expressions as word phrases.
-
Return to Guided Practice -
Differentiation: How will I scaffold and/or accelerate learning? For Whom? How will I
group my students?
Student representation of given operations, use of multiple forms of media for
presentation through student understanding
Accommodations/Modifications:
Colors, shapes, and words to accommodate all learners. Large print, modified number
of questions.
Homework:
Variable expressions worksheet