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We are "Number Ninjas" - chopping up numbers

Page 1: model counting to the middle, circle exact numbers and write a question mark between others. Ask about patterns

Page 2: After: how could we prove that we are correct? (number line)

Page 3: Goal: force using a number line to prove what number is in the middle. Think pair share # 8 and #6 -- and ask if someone can prove it

Page 4: model counting to middle, circling, and then "calculating" mid. Any patterns? 10, 11 (mid #) & 8, 9 (none) & 6, 7 (mid #) & 4, 5 (none)

Page 5 After: look at these! What did we just do? (broke the data into 4 equal groups). NOTICE that all of the data sets were ordered!!!! Now you do it in groups.

Work with your group to divide the data into 4 equal parts:

2, 4, 4, 7, 9, 11, 13, 15, 16, 18, 19

13, 7, 4, 18, 9, 4, 16, 2, 11, 15, 6

3, 5, 5, 8, 10, 12, 14, 16, 17, 19

To divide a data set into four equal parts:

First, make sure the data is in order from least to greatest!

Second, find the middle of the data set by counting from the ends toward the middle (number ninja)

Next, find the middle of the lower half: count from the left and middle (number ninja)

Last, find the middle of the upper half: count from the right and middle (number ninja)

1. In your notebook, make meaningful notes for your forgetful selves

2. CYUQs → Divide each data set into four equal parts. Do in your notebook. You chose where you want to start.

1, 3, 5, 5, 8, 10, 14, 17, 19

2, 4, 4, 7, 9, 11, 13, 15, 17, 18

1, 3, 5, 5, 7, 9, 12, 14, 14, 18, 19

14, 7, 3, 12, 8, 14, 5, 10, 6

9, 3, 15, 7, 12, 3, 18, 6, 11, 14

8, 14, 3, 11, 6, 14, 2, 9, 5, 17, 10

3. Stuck? Choose to persevere: review your thinking, try different approaches, ask for help, search

The first part of your Unit 1 Projects look GREAT. It was a solid start. Let's take a moment to review the checklist together (below). Please compare your work and, if needed, make improvements.

1. Use a ruler for your histogram's rows and columns (90 degree angles, vertical and horizontal lines)

2. Include labels (1 for the dot plot, 2 for the histogram)

3. Verify that your histogram does not have any gaps between columns

4. Shade your histogram in a way that makes it easier to see the data (every other column)

5. Verify that your histogram has realistic buckets (ranges) -- not too big

Click below to see a Level 3 project: