Microsoft Office In Schools By Anne Cutsinger, March 5, 2005
Microsoft Office in Education Provides opportunities Easy to use and teach Various programs work well together Students express themselves and communicate their ideas
Microsoft Powerpoint Students love working with color and animation Students are inspired to create visual presentations Student work can be posted to the web easily
Using PowerPoint in Instruction Introducing a new topic Direct Instruction Guided Questions Examples : Order of Operations 1 Order of Operations 2
Microsoft Front Page (formerly part of the Microsoft Office Suite) Mexican American Jeopardy Ms. Cutsinger’s Math Class
Order of Operations Using Integers
“Operators” & “Terms”… 12 • -5 + -3 • -6 Terms Operators
What do we do first???? It Matters!!!! -5 + 7 • 10 = -5 + 7 • 10 2 • 10 20 -5 + 7 • 10 -5 + 70 65 It Matters!!!!
The Order of Operations All of Algebra is Based on… The Order of Operations 1. Parenthesis 2. Exponents 3. Multiplication & Division (left to right) 4. Addition & Subtraction (left to right) 5. Simplify any Fraction
What do we do first???? 5 + 7 • 10 = 5 + 7 • 10 12 • 10 120 5 + 7 • 10 5 + 70 75 5 + 7 • 10 5 + 70 75
The Order of Operations Memorize These 1. Parenthesis 2. Exponents 3. Multiplication & Division (left to right) 4. Addition & Subtraction (left to right) 5. Simplify any Fraction
Example 1 -2 -2 + 6(-8 + 5) -20 42 - 6 10 -2 + 6(-3) 42 - 6 -2 + 6(-3) Holy Mackerel -2 + 6(-3) 42 - 6 -2 -2 + 6(-3) 16 - 6 -2 + -18 16 - 6
Example 2 12 • -5 + -3 • -6 -60 + 18 -42
Evaluating Algebraic Expressions (2a)2 - 3b2 Evaluate when a = -2, b = 4 (2•-2)2 - 3•42 (-4)2 - 3(4)2 16 - 3(16) 16 - 48 16 + (-48) -32
More “Placeholders” x2 - 2y2 + y Evaluate when x=7, y=-3 72 - 2(-3)2 + -3 49 - 2(9) + -3 49 - 18 + -3 31 + -3 28
Variables can “Vary” x2 - 2y2 + y Evaluate when x = -5, y = -2 (-5)2 - 2(-2)2 + -2 25 - 2(4) + -2 25 - 8 + -2 17 + -2 15
2 only has power over the a (not the negative sign) Looks Easy BUT… 2 only has power over the a (not the negative sign) Evaluate when a = -2 -a2
Try some on your own...