EXPONENTS (1.4) by: Tonya Petty
QUICK WRITE Write whatever you know about exponents on a sheet of paper. (Take 3 minutes.)
PARTNER UP Discuss your findings with your partner. Then bring back to whole group.
OBJECTIVE(strategic teaching agenda) The students will be able to use powers and exponents in expression. Alabama Course of Study: 6:1
VOCABULARY write on back of Washing Machine GO. exponents tells the number of times the base is used as a factor; also called an index/indices OR exponential notation Number written as a base number with an exponents (numbers expressed using exponents) powers Numbers expressed using exponents base
or exponential notation X n base exponent power Bonjour my friends!! This expression is called a power or exponential notation
Evaluating powers (write on GO) 2 3 exponent base Identify and read the Power or Product. 3 to second power or 3 squared 2. Identify the base and exponent. What does the power or product mean? mulitply 3 times itself 2 times. Evaluate the Power or Product. 3 x 3 = 9
POINTS TO REMEMBER (Write on the bottom of your GO.) When no exponent is given, it is understood to be 1. Any number raised to the power of 1 will always equal the number itself. Any number raised to the power of 0 (except for 0) will always equal 1.
EXAMPLE 1 Write 45 as a product. Then find the value of the product. 1. A Power; Four to the fifth power. 2. 4 is the base; 5 is the exponent. 3. The power means 4 times itself 5 times 4. 4x4x4x4x4 =
EXAMPLE 2 Write 3 x 3 x 3 x 3 using an exponent. Then find the value of the power. 1. A Product; 3x3x3x3. 2. 3 is the base; 4 is the exponent. 3. The product means multiple 3 times itself 4 times. 4. 3x3x3x3
now OUR TURN
EXAMPLE 3 4 3 = 3 x 3 x 3 x 3 1 81 EXAMPLE 4 25 x 25 = 252 2 625
now y'all turn with a partner
Get with your 9 o’clock buddy
Write each product using an exponent. Then find the value of the power. EX5: 2x2x2x2 EX6: 6x6x6
Now….Get with your 6 o’clock buddy
Write each power as a product. Then find the value of the product. EX7. 26 EX8. 37
now your turn
1) 46 2) 9 x 9 3) 43 4) 11 x 11 x 11 5) 41 = 6) 40 =
Evaluate each power or product….. 1) 46 = 4•4•4•4•4•4 = 4096 2) 9 x 9 = 92 = 81 3) 43 = 4 • 4 • 4 = 64 4) 11 x 11 x 11= 113 = 1,331 5) 41 = 4 6) 40 = ?
References Edhelper.com APTPlus.org Alabama Learning Exchange