W.A.M. (Writing About Math) Select one of three sets of words: > Choose the word you think is different > Write two or three sentences explaining why it didn’t belong. > Write two or three sentences explaining why the others were similar a. perfect cube, perfect squares, irrational, rational b. exponent, exponential notation, scientific notation, significant digits c. variable, algebraic expression, like terms, exponent . Homework: Maintenance sheet 13-24 Tutoring TODAY! Check to see if you have any missing work!

Homework Check 1. V = 340.17 cm3 2. h = 6, y = 8, g = 3, no solution 3. c 4. J’ (1,3) K’ (3,3), L’ (2,1) 5. J’ (-4,12) K’ (-12,12), L’ (-8,4) 6. J’ (4, -12) K’ (12, -12), L’ (8, -4) 7. 7 8. 16 9. 7.68 x 10 13 10. V = 5421.85 cm3 11. J’ (12, -4) K’ (12, -12), L’ (4, -8) 12. V = 169.56 ft3

Standards I Can… Standards for Mathematical Practice MCC8.EE.7 Solve linear equations in one variable. a. Give examples of linear equations in one variable with one solution, infinitely many solutions, or no solutions. Show which of these possibilities is the case by successively transforming the given equation into simpler forms, until an equivalent equation of the form x = a, a = b, or a = a results (where a and b are different numbers). b. Solve linear equations with rational number coefficients, including equations whose solutions require expanding expressions using the distributive Standards for Mathematical Practice Make sense of problems and persevere in solving them. Reason abstractly and quantitatively. Construct viable arguments and critique the reasoning of others. Model with mathematics. Use appropriate tools strategically. Attend to precision. Look for and make use of structure. Look for and express regularity in repeated reasoning. I Can… I can use strategies to create and solve linear equations with one solution, infinitely many solutions, or no solutions.

What does it mean to solve an equation? Post-it! What does it mean to solve an equation? How do you know when you’re done?  Write it on a post-it note and come to the board to post-it on there.

Vocabulary Word Definition Variable A letter or symbol used to represent a number. Coefficient A numerical or constant quantity placed before and multiplying the variable in an algebraic expression (e.g., 4 in 4x) Evaluate To perform operations to obtain a single number or value Solution The value or values of a variable that make an equation a true statement. Like Terms In algebra, like terms are terms that have the same variables and powers. Only the coefficients of like terms can be different.

Infinite (Many) Solutions As we fill out the graphic organizer… One Solution Infinite (Many) Solutions No Solutions Complete the equations handout!

Summarizer How do you know that the equation 5(x + 2) = -3 + 5x has no solution?  How can you tell when an equation has infinite solutions?