{"id":5333,"date":"2010-10-28T14:23:14","date_gmt":"2010-10-28T06:23:14","guid":{"rendered":"http:\/\/www.intmath.com\/blog\/?p=5333"},"modified":"2010-10-29T07:45:47","modified_gmt":"2010-10-28T23:45:47","slug":"intmath-newsletter-vision-wealth-and-slopes","status":"publish","type":"post","link":"https:\/\/www.intmath.com\/blog\/letters\/intmath-newsletter-vision-wealth-and-slopes-5333","title":{"rendered":"IntMath Newsletter: vision, wealth and slopes"},"content":{"rendered":"

28 Oct 2010<\/p>\n

In this Newsletter:<\/p>\n

1. Math application: 20\/20 vision and trigonometry
\n 2. Math application: Statistics and wealth distribution
\n 3. Math tip: The slope of the 3 main trigonometric curves
\n 4. Friday math movies: Math education and cell animations
\n 6. Final thought: Dealing with mistakes <\/p>\n

Welcome to the hundreds of new people who have signed up for the IntMath Newsletter! <\/p>\n

1. What does 20\/20 vision mean?<\/h2>\n

Suitable for: <\/strong>Everyone. This article ties trigonometric concepts into something that's important for all of us - good vision. <\/p>\n\n\n\n
\"eye\"<\/a><\/td>\n\n

We often hear the expression 20\/20 vision. What do the 2 numbers mean?<\/p>\n

What does 20\/20 vision mean?<\/a><\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

2. Singapore wealth - mean and median?<\/h2>\n

Suitable for: <\/strong>Everyone. The wealth distribution of a country affects its stability, so this is an important application of statistics. <\/p>\n\n\n\n
\"singapore-wealth-distribution\"<\/a><\/td>\n\n

When we have a distribution with a high mean but a low median, what does it look like?<\/p>\n

Singapore wealth - mean and median?<\/a><\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

3. Explore the slope of the sin, cos and tan curves<\/h2>\n

Suitable for: <\/strong>Everyone. The slope of a straight line is easy - find vertical rise and divide by horizontal run. But what is the slope of a curve? This is an important concept and worth thinking about, even if you've never heard of calculus yet.<\/p>\n

I broke this up into 3 separate articles to make it more digestible. <\/p>\n\n\n\n
\"sine<\/a><\/td>\n\n

a. Sine curve<\/strong><\/p>\n

Use an interactive graph to explore how the slope of sine x changes as x changes.<\/p>\n

Explore the slope of the sin curve<\/a><\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

 <\/p>\n\n\n\n
\"cosine<\/a><\/td>\n\n

b. Cosine curve<\/strong><\/p>\n

What is the value of the slope of the cosine curve? Use an interactive graph to investigate it.<\/p>\n

Explore the slope of the cos curve<\/a><\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

 <\/p>\n\n\n\n
\"slope<\/a><\/td>\n\n

c. Tangent curve<\/strong><\/p>\n

You can investigate the slope of the tan curve using an interactive graph.<\/p>\n

Explore the slope of the tan curve<\/a><\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

4. Friday math movies<\/h2>\n

Suitable for: <\/strong>Everyone.<\/p>\n

a. Arthur Benjamin's formula for changing math education<\/h2>\n\n\n\n
\"arthur<\/a><\/td>\n\n

What math topic is most useful for people in their "real life"?<\/p>\n

Friday math movie: Arthur Benjamin's formula for changing math education<\/a><\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

b. David Bolinsky animates a cell<\/h2>\n\n\n\n
\n

\"animate<\/a><\/p>\n<\/td>\n

\n

Our bodies truly are beautiful and amazing.<\/p>\n

Friday math movie: David Bolinsky animates a cell<\/a><\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

5. Final thought: Dealing with mistakes<\/h2>\n

Donald Trump had a very successful career in real estate until he ran into serious financial difficulties during the 1990s and basically went broke. He has since recovered and is now worth around US$2.6 billion.<\/p>\n

The following quote by Trump applies to all math students! <\/p>\n

\n

\"Make your mistakes work for you by learning from them.\"<\/p>\n

Donald Trump<\/p>\n<\/blockquote>\n

Until next time, enjoy whatever you learn. <\/p>\n

See the 6 Comments<\/a> below.<\/p>\n","protected":false},"excerpt":{"rendered":"

1. Math application: 20\/20 vision and trigonometry
\n 2. Math application: Statistics and wealth distribution
\n 3. Math tip: The slope of the trigonometric curves
\n 4. Friday math movies: Math education and cell animations
\n 6. Final thought: Dealing with mistakes <\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_mo_disable_npp":""},"categories":[104],"tags":[],"_links":{"self":[{"href":"https:\/\/www.intmath.com\/blog\/wp-json\/wp\/v2\/posts\/5333"}],"collection":[{"href":"https:\/\/www.intmath.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.intmath.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.intmath.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.intmath.com\/blog\/wp-json\/wp\/v2\/comments?post=5333"}],"version-history":[{"count":0,"href":"https:\/\/www.intmath.com\/blog\/wp-json\/wp\/v2\/posts\/5333\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.intmath.com\/blog\/wp-json\/wp\/v2\/media?parent=5333"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.intmath.com\/blog\/wp-json\/wp\/v2\/categories?post=5333"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.intmath.com\/blog\/wp-json\/wp\/v2\/tags?post=5333"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}