Exploratory LUNCH locker ~Day E~ December 5, 2014 Science Social Studies Exploratory Exploratory LUNCH locker Math English

ACTIVATOR (December 5, 2014) : Take out your H.W & notebook. In notebook, answer this: Estimate the quotient and then solve using the division algorithm: 1908 ÷ 36

December 5, 2014 Day E SWBAT understand that the standard algorithm of division is simply a tally system arranged in place value columns, and use this knowledge to compute long division problems. 6.NS.B2 and 6.NS.B3

Example 1 (pg. 51): 65 1,755 ÷ 𝟐𝟕 = Model: Standard Algorithm:

Example 1 (pg. 51): The 162 comes from 27 × 6. This is really showing 27 × 60, which is 1,620. The 135 comes from 27 × 5.

How Do You Feel? December 5, 2014 Day E topic.

Example 2 (pg. 52): 205,276 ÷ 38 = ≈ 200,000 ÷ 40 5 I can start by determining how many times 40 will divide into 200 thousands. I know that 40 × 5 = 200. So, I will start the division process by placing a 5 over the 5 in 205,276. This 5 represents 5 thousands.

Example 2 (pg. 52): 205,276 ÷ 38 = 5,402 Imagine that your friend wrote 542 as the answer. How could you prove to your friends that 542 is not the solution?

Example 3 (pg. 53): 17,216,673 ÷ 23 = ≈ 175 ÷ 25 What you are actually doing is 172 hundred thousands ÷ 23 = 7 hundred thousands. Each step can be represented using the units.

Example 3 (pg. 53): When discussing the remaining steps, you can refer to them as follows:

How Do You Feel? December 5, 2014 Day E topic.

Work with a partner or group of 3 (10 minutes) Exercise 1-6 (pg. 52 - 53): Work by self (10 minutes) Work with a partner or group of 3 (10 minutes)

Closing: Explain in your own words how the division algorithm works. Many answers. Sample response: The division algorithm shows successive estimates of the quotient organized by place value, or the division algorithm breaks one large division problem into several smaller ones organized by place value.

Divide using the division algorithm: 392,196 ÷ 87. Exit Ticket (in notebook or agenda): Divide using the division algorithm: 392,196 ÷ 87.

December 5, 2014 Day E Problem Set: Page 54

December 5, 2014 Day E Accommodations Read or reread presentation or activity directions, as needed or after prompting Use examples to model and act as a guide for emerging learners