Sharing Grant Sanderson’s “Surface Area of a Sphere” video with my older son

Last week Grant Sanderson published an incredible video about the surface area of a sphere: By happy coincidence my older son is spending a little time reviewing polar coordinates now. Although not exactly the same ideas, I think there’s enough overlap to make studying Sanderson’s new video worthwhile. So, I’m going to do a 6-part … Continue reading Sharing Grant Sanderson’s “Surface Area of a Sphere” video with my older son

A fun experiment sharing Grant Sanderson’s Topology video with a kid

I saw a really neat new video from Grant Sanderson this morning: We’ve actually looked at the ideas Grant is sharing here before, but my son didn’t remember: Grant Sanderson’s “Fair Division” video shows a great math project for kids For today I asked my younger son (in 7th grade) to watch the video and … Continue reading A fun experiment sharing Grant Sanderson’s Topology video with a kid

Using Dan Anderson’s line art program to explore lines with my son

My younger son just started the section on lines in Art of Problem Solving’s Algebra book. By happy coincidence Dan Anderson shared this fun line math art program: I thought it would be fun to have my son play around with the program and just see what his reactions were. Here are his initial reactions … Continue reading Using Dan Anderson’s line art program to explore lines with my son

Using Grant Sanderson’s Pythagorean Triple video for an introductory trig lesson

My older son is starting to learn trig and I wanted to show him the surprising connection between the exponential function and trig functions. Grant Sanderson’s video on Pythagorean triples from earlier this year came to mind: After my son watched the video tonight I asked him to talk about some of the ideas. Here’s … Continue reading Using Grant Sanderson’s Pythagorean Triple video for an introductory trig lesson

A problem discussed by Martin Gardner, Grant Sanderson, Bjorn Poonen, and the AMC 10 :)

My son was working on some old AMC 10 problems today and this problem gave him a bit of trouble. The problem is #18 on the 2007 AMC 10 b: We’ve studied a similar problem before in these three projects: A Strange Problem I overheard Bjorn Poonen discussing Bjorn Poonen’s n-dimensional sphere problem with kids … Continue reading A problem discussed by Martin Gardner, Grant Sanderson, Bjorn Poonen, and the AMC 10 🙂

A problem about cones for kids courtesy of Dan Anderson

Saw a fun tweet from Dan Anderson when I got up this morning: Great quote (accurate?) in this article: https://t.co/0mX9nETVHd pic.twitter.com/KAB26RZQFA — Dan Anderson (@dandersod) July 24, 2017 Here’s a direct link to the CNN article: The artificial glacier growing in the desert The article is interesting all by itself, and the mathematical question Dan … Continue reading A problem about cones for kids courtesy of Dan Anderson

Playing with Dan Anderson’s complex map program

Dan Anderson made a really neat little complex mapping program today: This program allowed us to do a fun continuation of the project that we did over the weekend: Sharing Kelsey Houston-Edwards’s Complex Number video with kids Looking at the complex map z -> z^2 with kids So, with each kid tonight I had them … Continue reading Playing with Dan Anderson’s complex map program

Sharing Grant Sanderson’s “Pi and Primes” video with kids part 2:

Grant Sanderson’s latest video explaining a connection between pi and prime numbers is absolutely fantastic: This video is sort of at the edge of what kids can understand, but it was fun to explore a few of the ideas with them even if understanding 100% of the video was probably not realistic. Our project on … Continue reading Sharing Grant Sanderson’s “Pi and Primes” video with kids part 2:

Sharing Grant Sanderson’s “Pi and Primes” video with kids. Part 1

[This one was written up pretty quickly because we had to get out the door for some weekend activities. Sorry for publishing the un-edited version] Grant Sanderson has a new (and, as usual, incredible) video on “Pi hiding in prime regularities”: By coincidence, we’ve done a project on this topic before: A really neat problem … Continue reading Sharing Grant Sanderson’s “Pi and Primes” video with kids. Part 1

More calculus ideas for kids inspired by Grant Sanderson

I’m enjoying thinking about how to share Grant Sanderon’s latest calculus video series with kids. My goal is not remotely to develop a calculus course, but just to give kids an opportunity to see and explore some of the basic ideas that Sanderson shares in his video series. At a high level, things like slope … Continue reading More calculus ideas for kids inspired by Grant Sanderson