Math Extra: Difference between revisions

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* Infinity
* Infinity
** [https://www.youtube.com/watch?v=elvOZm0d4H0 Infinity is bigger than you think - Numberphile - YouTube]
** [https://www.youtube.com/watch?v=elvOZm0d4H0 Infinity is bigger than you think - Numberphile - YouTube]
** [https://www.youtube.com/watch?v=Swm8tTLWirU Transcendental Darts - YouTube]
* Logarithms
* Logarithms
** [https://www.youtube.com/watch?v=zzu2POfYv0Y Logarithms, Explained - Steve Kelly - YouTube]
** [https://www.youtube.com/watch?v=zzu2POfYv0Y Logarithms, Explained - Steve Kelly - YouTube]

Revision as of 18:01, 26 February 2019

Math Extra are notes by parent volunteer Dave Barker while he does math with enthusiastic 4th & 5th graders at Sagamore Hills Elementary School.

See also: Sagamore Hills Math Club

Videos

Meetings

Next

?

2019-02-26

  1. List on whiteboard various numbers: 0, 1, i, e, π, Φ. Review.
  2. Talk about rational numbers, their repeating decimals, and how some of the afore mentioned numbers are not rational
  3. Watch, e (Euler's Number) - Numberphile - YouTube

2019-02-19

  1. Play on the whiteboard, introducing logarithms
  2. Watch How I Feel About Logarithms - YouTube
  3. Write out sample logarithms and see how they grow differently than multiplication

2017-05-04

  1. Completed, "Math Problem Solving Challenge Test / Grade 5 / 2006–2007" page 2 problems 11–17, on page 10 of "Sagamore Math Tournament Fernbank Afterschool Practice Dec 17 2007 Grade 5"
    (from http://www.mathcs.emory.edu/~mic/mathtourney.html (linked from http://sagamorehillspta.org/mathclub ))
  2. Video of math in plant growth, parts [1] and [2] of 3 (too much for this age)

2017-05-04

  1. Completed, "Math Problem Solving Challenge Test / Grade 5 / 2006–2007" page 1 of 2, page 9 of "Sagamore Math Tournament Fernbank Afterschool Practice Dec 17 2007 Grade 5"
    (from http://www.mathcs.emory.edu/~mic/mathtourney.html (linked from http://sagamorehillspta.org/mathclub ))
  2. Introduction to the Pythagorean Theorem with, "Pythagoras Without Words - YouTube", and application through, "The Spider and the Fly - YouTube"

2017-04-20

  1. Completed, "Sagamore Math Tournament Grades 4–5 practice cipher round from 2007 tournament", from pages 14–23 of "Sagamore Math Tournament Fernbank Afterschool Practice Dec 17 2007 Grade 5" (from http://www.mathcs.emory.edu/~mic/mathtourney.html (linked from http://sagamorehillspta.org/mathclub ))
  2. Danced

2017-03-16

  1. Bennett shares a math problem finding missing side links of a right-angled polygon
  2. Dave talks about pi (because Pi Day was a couple days ago):
    1. How date work around the world and how their Pi Days could be different
    2. 22/7 as an approximation
    3. pi in things that don't look like circles, like infinite series (π/4 = 1 - 1/3 + 1/5 - 1/7 + 1/9 - …)
  3. Watch pi videos!
    1. Pi and the size of the Universe - Numberphile
    2. Pi Is (still) Wrong.
    3. A Song About A Circle Constant

2017-03-02

  1. Create an equivalent fractions problem and doodle, pass to other student, solve problem and add to doodle, repeat 4 times
  2. Hexaflexagon Series

2017-02-23

  1. Ms Lockwood equivalent fractions
  2. Math Stars (vol. 4 no. 7) as others finished up
    1. Reviewing mean, median, mode
  3. Imaginary Numbers Are Real [Part 9: Closure]

2017-02-09

  1. Ms Lockwood's test review sheet, division word problems
  2. Math Stars (vol. 4 no. 6) as others finished up
  3. Videos
    1. The Order of Operations is Wrong
    2. Transformations of the Number Line
    3. Base Number Jokes Explained - Numberphile
    4. Math Jokes Explained - Numberphile

2017-01-26

  • Reviewed what the kids are doing in class
  • Explore:
    • What numbers are
    • Different systems of representation (Mayan base 20)
    • Explore bases (10, 2, 3, 12, 8)
    • Order of operations

Notes

Download videos

Using youtube-dl:

youtube-dl --format 'bestvideo[ext=mp4][height<=720]+bestaudio[ext=m4a]/bestvideo[ext=webm][height<=720]+bestaudio[ext=webm]/best[height<=720]' --verbose

Ensures the video is no larger than 720p—to save space on portables—and prefer mp4—for portability.

See also