HW: Maintenance Sheet 7. 10. Due Friday HW: Maintenance Sheet 7.10 *Due Friday *Correction: Question 16 & 17 goes together Bellringer 10.19 *write down in your notebook 1. Josh is n years old. In 13 years he will be 24. n + 13 = 24 13 + 24 = n 13 + n = 24 24 - 13 = n none of the above   2. Twelve is sixteen less than four times a number 12 = 16 - 4 - n 12 = 16 - 4n 12 = 4n - 16 16 - 12 = 4n 12 = 16n - 4 

Distributive Property What strategies can be used to solve algebraic expressions and equations? Combine Like Terms Expression Equations Solving Equations Distributive Property

Formative Assessment Task 7.EE:Use properties of operations to generate equivalent expressions. 7.EE:Solve real-life and mathematical problems using numerical and algebraic expressions and equations. Learning Target I can solve linear equations with one variable and match scenarios to represent those equations

Pre-Test Misconception Q2 What is the difference between perimeter and area? How do you find the perimeter of a shape? How do you find the area of a rectangle?

Write an expression for the area of this rectangle. Learning Target I can solve linear equations with one variable and match scenarios to represent those equations Area of rectangle = _ _ _ _ _ _ _ _ _ _ _ _

Write an expression for the perimeter of this rectangle. Learning Target I can solve linear equations with one variable and match scenarios to represent those equations Perimeter of rectangle = _ _ _ _ _ _ _ _ _ _ _ _

Writing Algebraic Expressions Which two expressions are equivalent? Learning Target I can solve linear equations with one variable and match scenarios to represent those equations

Which Equations Describe The Story? A pencil costs $2 less than a notebook. A pen costs 3 times as much as a pencil. The pen costs $9 Which of the four equations opposite describe this story? Let x represent the cost of notebook. Learning Target I can solve linear equations with one variable and match scenarios to represent those equations

Discussion If x is the cost of a notebook, what expression will give the cost of a pencil? [x – 2.] If a pen costs 3 times as much as a pencil, what expression will give the cost of a pen? [3(x - 2) or 3x – 6.] What mistakes have been made with B and C? [The expression x - 2 has been multiplied by 3 incorrectly in both cases.] OK, so what is the cost of the notebook? [$5.] Can we check that this fits our equations?