1. Alphabet Math Project Liz Perejilo Block D (Day 1) Math 9

2. A  Algebraic equations  Equations that have a variable in the question that you need to solve.  I learned that in algebraic equations that you can reverse the question to figure out the variable.  Ex: 3x + 7 = 16

3. B  BFSD – Brackets, Fractions, Solve, and Divide (Best friends share deserts)  Shows the order of solving an equation  I learned that this is an easy way to remember how to find the answer quickly.

4. C  Chord  A line segment on the interior of a circle. A chord has both endpoints on circumference the circle.  I learned a chord can be any line anywhere in the interior of a circle as long as it is touching the circumference in two places

5. D  Distribute  To multipy out the parts of an expression.  Distributing is the opposite of factoring.  I learned distributing is an easier way to see the question if you are confused  Ex: 3(2+7)=3x2+3x7

6. E  Equations  A mathematical sentence built from expressions using one or more equal signs (=).  Ex: 78 + 3 = 81

7. F  Flip  Changing the sign of a number by making it the opposite.  I learned that you can flip the sign of the numbers to be sure that the variable is positive.

8. G  Greater than  When a number is bigger in value than the one it is being compared to  I learned that you can only have a number that is bigger in value on the right  Ex: 8<9

9. H  Height of a prism  A line segment on the interior of a circle. A chord has both endpoints on the circle.  I learned that knowing the height of the prism can help you find the surface area because it is connected to all the sides

10. I  Isosceles  A triangle with two sides that are the same length  I learned that isosceles have two sides that are the same and that if you cut them in half, you get a right triangle with 90 ⁰

11. J  Just add the exponents  In the multiplication law of exponents: when the bases are the same, you just add the exponents  I learned a short cut with multiplying exponents, when you have two o the same bases, you just add the exponents  Ex: 2 ⁵ x 2³ = 2 ⁸

12. K  Know your angles  Knowing your angles helps you when you have to name the angle or to figure out the degrees of the angle.  I learned knowing angles helps you get stuff done faster.  Ex: A right angle is 90 ⁰, if you automatically know it, you don’t have to measure it.

13. L  Length  The measurement or extent of something from end to end; the greater of two or the greatest of three dimensions of a body.  I learned that the length is perpendicular to the height, and that you need the length to find the surface area

14. M  Monomial  A polynomial with one term  I learned that you don’t need more than one variable, number or exponent to make it a polynomial.  Ex: 5x³

15. N  Numerator  The top part of a fraction  I learned that you can divide the denominator by the numerator.  Ex: ³/ ₆ -> 3 is the numerator

16. O  Obtuse triangle  A triangle in which has an obtuse angle as one of its interior angles  Ex:

17. P  Power  The result of raising a base to an exponent  I learned that you can make the number look simpler and making a power is linked to multiplication  Ex: 8 is a power to 2 -> 2³

18. Q  Quotient  The result of dividing two numbers or two expressions  I learned that if you have one quotient and multiply it by 2, you get the original number  Ex: 40 divided by 2 = 20, 20 is the quotient

19. R  Ratio  The result of dividing one number or expression by another.  Occasionaly, ratios are a proportion 4:7 (Four to seven). M  Mostly they are fractions  Ex: 2:3 (Two to three)

20. S  Simplify  By adding number that are the same or creating zero pairs to shorten the equation.  I learned that simplifing a question makes it easier to solve  Ex: 3x + 7 = 8x – 7  (3x + 8x = 11x) (+7 -7 = 0)  = 11x

21. T  Tangent  A line tangent to a circle is perpendicular to the radius to the point of tangency.

22. U  Expanding using the distributive property  Ex: (2x) (3x-1)  2x (3x) + 2x (-1)

23. V  Variable  A variable is a letter used to replace the unknown number in an equation.  I learned how to find the number of the variable  Ex: 3 r + 7 = 5 r – 4

24. W  Width  the measurement or extent of something from side to side

25. X  X axis  The X axis is perpindicular to the Y axis, it is used in graphing charts to identify the horizontal line

26. Y  Y axis  The Y axis is the line in a graphing chart that is vertical

27. Z  Zero pairs  When you have 2 numbers on each side of the equal sign which cancel each other out.  I learned that making zero pairs makes the question easier and shorter.