## Monday, November 25, 2013

### Room 12 Math Channel

Check out the Room 12 Math Channel on Vimeo. We are adding videos to it on a daily basis. Please leave us feedback on the quality of the videos and let us know if there are specific problems or topics you'd like to see.

Thank you!

1. I really liked the two digit traditional algorithm video on your channel. It was very clear and well written, and it even explained why you put a "0" on the second set of numbers! This was a great tutorial.
Randi from IT 442

2. The 3-digit by 2-digit multiplication video was very clear. I could follow each step you were showing and I appreciated that you took your time to explain each step!

-Augie
Mr. Pahl's WWU IT student

1. Dear Augie,
I am happy that you like the 3 digit by 2 digit video. I love that you are commenting Thank you!!!
From,
Cam!!!

3. I watched the video "How Many More Miles." What a quick and efficient way to solve this math problem! Sometimes when I subtract using the standard stacking method, I end up putting so many different marks on my paper and it can get confusing. Thanks for the neat number line idea!

-Ashley, from Mr. Pahl's WWU class.

4. 2 Digit Multiplication- Great step by step instruction. It is an important step to cross off the 2 when you carry, nice job on that! I liked how thorough you were on your calculations

5. I watched a few of the videos on your math channel. One that I saw that was very clear was multiply a two digit number by a two digit number. The directions were clear and easy to follow, and I appreciate that you mentioned how the 9 is really a 90 and added a zero to make it clear. Keep up the good work!

-Stephanie
Mr. Pahl's WWU IT Student

1. Dear Stephanie,
I appreciate your comment on the math that we did. I hope you enjoy more of our math work that the rest of the fourth grade did. I hope that you’re proud of other peoples work too.
From Kyle

6. I watched two videos on long division. The directions were clear and to the point with very little unnecessary pausing. Good work! I know that long division is difficult for many people. Are there any other methods that you use for division?

-Ms. Fellers
Mr. Pahl's WWU student

1. Dear Ms. Fellers
Another way to solve long division is a number line because I know that division is repeated subtraction just like multiplication is repeated addition
Sincerely, Charlie

7. Hi Mr. Pahl's fourth grade class,

I just watched the "Elapsed Time" video that you posted on your math channel. You explained each of your steps very clearly and it was easy for me to follow and understand what you were doing and why. Thanks for sharing this strategy for finding elapsed time!

Sarah
from Mr. Pahl's IT class at WWU

8. For the 'How Many More Miles?' problem, the method of using a number line made a lot of sense to me. I see how that can make subtracting larger numbers easier to understand!

-Augie
Mr. Pahl's WWU IT student

9. I was really impressed with the area model video on your Math Channel. Your explanation of how to multiply the two numbers to find the area was very clear and I could see it being a helpful tool for other students. Great job! Keep it up, Room 12!
-Morgan
WWU IT student

10. This is a fun idea! I liked the videos and they described each process clearly. One of the videos I watched taught long division. I like how each step was explained and the presentation made sense!

David
Mr. Pahl's IT 442 student

11. Hey Room 12!

I liked the acronym DMSB or Dracula's Mother Sucks Blood as a way to remember to divide, multiple, subtract and bring down. I think I will remember the process of long division much better now.

I think some feedback would be that if you were to record your videos in a space that is more quiet then there wouldn't be as much background noise. Great work on all of the videos!

Also, what would you do in long division if you were dividing numbers such as 50 divided by 4?

Sincerely,

Laura from Mr. Pahl's WWU class

1. Dear Laura,
That’s a SUPER good question! 50 divide by 4 is a head twister! I’m an expert at divion! I would solve it for you, sadly but I don’t have a piece of paper with me. As I said AWESOME QUESTION! And ill solve it for you later!

12. I thought the "elapsed time" problem was a great way to visualize how to add and subtract, especially when using time problems because sometimes it can get tricky to remember that minutes only go up to 60 and then you have to start over. I thought it was smart to go from 11:35 to 11:50, because it makes the last chunk of elapsed time (11:50 to 12:10) a much easier number to add in your head (11:50 + 10mins =12:00 then 12:00 + 10 mins = 12:10). Thanks for sharing!

Sincerely,

Jeff, a WWU student in Mr. Pahl's class

13. Great videos!
I watched the Area Model and 2 digit multiplication videos. I think that they are both great in that you showed each step and thought aloud. The video would be even more awesome if the student did not block the whiteboard with their arm as much or gave time to show each step slower so that one can follow along easier. Great use of technology to help others with math topics!
Sincerely, Ally, student in Mr. Pahl's IT class

I watched your videos on two-digit multiplication. I was very impressed how you explained that the 9 (from the first video) and 6 (from the second video) actually was a 90 and a 60 so we had to record the zero. This gets really easy for us to forget when we multiply. Maybe next time you can also explain to the viewer what the other tens digits mean (like that the 2 actually represents 20). Keep up the awesome videos!

From,
Lindsy
Mr. Pahl's WWU student

1. Dear Lindsy,
I hope that you like are videos. I love that you wright to us. Thank you so much!!!
From,
Cam

15. 2 Digit subtraction- you worked slowly in order for viewers to follow along, I also like how you kept your numbers organized. Sometimes the stacking method can get confusing, but your work is very organized that it isn't possible to get confused! Great work.

16. Dear Laura, I agree full heartedly that DMSB is a fun and accurate way to remember Division . Sincerely, Mr.Pahls student Jaymeson

17. Dear Izabelle,
I could really use what Izabelle did. Half of it is that I don’t know my area model.

I think we explained the problems really well on doing the videos and it was hard with all the talking in the background but we succeeded. I watch some of the videos on vimeo and I was really impressed. Good job, I hope Mr. Pahl lets us make more videos.
From, Charlize

19. Dear Mr. Pahl,
Thank you for posting our math channel and for using your time up for it thank you Mr. Pahl
From Silas.

It is pretty cool how all of us fourth graders are helping kids to
git better at math.

From, Devin

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