Homework: Maintenance Sheet Due Friday  297 ft3

Perfect Squares and Cubes

2 minute talks 1. 5.2 x 10-5 = 0000052 Explain what I did wrong and correct the error. 2. 5.2 x 105 = 5,200,000 3. 92,924 = 9.2924 x 105

Learning Target: EE3 Scientific Notation MSE8.EE.1 Know and apply the properties of integer exponents to generate equivalent numerical expressions. For example, 32 × 3(–5) = 3(–3) MSE8.EE.3 Use numbers expressed in the form of a single digit times an integer power of 10 to estimate very large or very small quantities, and to express how many times as much one is than the other. For example, estimate the population of the United States as 3 × 108 and the population of the world as 7 × 109, and determine that the world population is more than 20 times larger. I can represent very small and large numbers using integer exponents and scientific notation?

Estimating Length Using Scientific Notation Pre-Assessment Error Analysis (based on the Pre-test) In your group “discuss” the following common issue questions (3-5 minutes) Scientific to decimal notation What does 10-1 mean? How can you check your answer is correct? What is scientific Notation Have any of these numbers been written in scientific notation? Explain why or why not. 20 x 10-2 0.6 x 104 5 x 103

Estimating Length Using Scientific Notation Pre-Assessment Error Analysis (based on the Pre-test) In your group “discuss” the following common issue questions (3-5 minutes) Effects of negative exponents In scientific notation, which has a bigger effect on the size of a number, the coefficients or the exponent? Explain? Is 104 bigger than 10-4? Size Rankings How do you know which measurement is the smallest or biggest? .04 .4

Using your white board or remote: Which number is Bigger? 30,000 × 10−1 B 3 × 103 C 0.3 × 104 Why did you choose that expression?

Reasoning/Did you know???? Which expression did you use to work out the number? Did you check all three expressions? These expressions all represent the same number. What number is that? 3000 How can you justify that all three expressions are the same?

Which of these three are written in scientific notation Which of these three are written in scientific notation? How do you know? A 30,000 × 10−1 B 3 × 103 C 0.3 × 104

Using your white board: Which number is greater? 8 × 10−3 B 4 × 10−1

Pair up with another students who has the same answer as you? 8 × 10−3 4 × 10−1 Now discuss with your partner, how much greater your chosen number is than the other number?

Learning Target: EE3 Scientific Notation I can represent very small and large numbers using integer exponents and scientific notation?

Learning Target: EE3 Scientific Notation I can represent very small and large numbers using integer exponents and scientific notation?