T2
Use formulas to calculate the perimeter of polygons drawn on the coordinate plane
NS.8 & EE.2c
Lesson 1
Direct Instruction
Notes
Perimeter (P) is the total distance around the outside edge of a two-dimensional shape.
Find the perimeter of the quadrilateral
Model writing P = a + b + c + d, substituting the length of the side, and working down
Vocabulary: formula, substitution, simplify by working down, circle answer (P= )
Consolidation
Notes
Formula: a special recipe for solving a math or science problem. Instead of words, it uses letters and symbols to show what to do.
One way to write a formula for perimeter is P = a + b + c + d
Substitution: replacing a variable (a letter that stands for an unknown number) with its actual number value
Let's find the perimeter of the polygons we drew in Target 1:
If you want to see the formula for finding the distance between points, search "what is the distance between (1,2) and (4, -3) to the tenths place"
My Responsibilities
Due 10/6
1. In your notebook, make meaningful notes for your forgetful selves
2. CYUqs → Click the link below to open. Do your work in your notebook. Write a perimeter formula and substitute. Do all 12. If you need help, get help. If someone else needs help, give help.
Check answers as you’re working. If you make a mistake, fix it.
3. Stuck? Choose to persevere: review your thinking, try different approaches, ask for help, search
Lesson 2
After completing the Check-your-understanding Questions, which were important for everyone to do?
Review your work and discuss: what does it mean to find the perimeter?
On the blank side, at the top of your paper, write: First name, last name, U3T2
Show how you would use a formula and substitute to find the perimeter of this rectangle:
Lesson 1
Direct Instruction
Notes
Perimeter (P) is the total distance around the outside edge of a two-dimensional shape.
Find the perimeter of the quadrilateral
Model writing P = a + b + c + d, substituting the length of the side, and working down
Vocabulary: formula, substitution, simplify by working down, circle answer (P= )
Consolidation
Notes
Formula: a special recipe for solving a math or science problem. Instead of words, it uses letters and symbols to show what to do.
One way to write a formula for perimeter is P = a + b + c + d
Substitution: replacing a variable (a letter that stands for an unknown number) with its actual number value
Let's find the perimeter of the polygons we drew in Target 1:
If you want to see the formula for finding the distance between points, search "what is the distance between (1,2) and (4, -3) to the tenths place"
My Responsibilities
Due 10/6
1. In your notebook, make meaningful notes for your forgetful selves
2. CYUqs → Click the link below to open. Do your work in your notebook. Write a perimeter formula and substitute. Do all 12. If you need help, get help. If someone else needs help, give help.
Check answers as you’re working. If you make a mistake, fix it.
3. Stuck? Choose to persevere: review your thinking, try different approaches, ask for help, search
Lesson 2
After completing the Check-your-understanding Questions, which were important for everyone to do?
Review your work and discuss: what does it mean to find the perimeter?
On the blank side, at the top of your paper, write: First name, last name, U3T2
Show how you would use a formula and substitute to find the perimeter of this rectangle: