# Tag Archives: Geometry

### The Science of Crowd Counting & 3 Ways to Teach Kids Estimation

Patricia introduces the science of counting crowds and methods to show kids how to estimate large numbers. Read More

### Kids Won’t Shy Away From Geometry in ‘Land of Venn’ App

Is math on your list of 4-letter words? Do you miss the point in geometry? Then travel to the Land of Venn Geometric Defense! Read More

### Decoding H.P. Lovecraft

Author Jonathan Wood catalogs all those strange and eldritch Lovecraftian words ululating throughout the horror icon’s stygian works. Read More

### Bach's Mobius Strip

Sometimes when artists visualize music, it detracts from the piece (scenes from Fantasia come to mind…), but this little animation by Jos Leys shows just how brilliant Bach can be. Read More

### GeekDad Puzzle of the Week Solution – Wacky Right Integer String Triangles

Did you correctly count the distinct right triangles possible on a mostly complete grid of 21 x 16 nails with integer lengths of string? Read More

### Flatland and Sphereland Come to Animated Life

I discovered recently that both Flatland and Sphereland have been made into films, produced by Seth Caplan. Here’s why they’re worth watching. Read More

It seems that a notable frequent solver of the puzzle forgot that the removed block would leave new, interior edges that would technically now be “perimeter,” in addition to removing the edges that were once there. You know who you … Read More

### GeekDad Puzzle of the Week: Cubic Corners

To calculate the perimeter of a square, you multiply a side by four. To calculate the perimeter of a cube, you multiply a side by 12. But what, now, are the possible perimeters of my family’s irregularly shaped Rubik’s Cube … Read More

### Truncated Icosahedron: Maker Faire NYC Most Memorable for Kids

While attending World Maker Faire in New York earlier this month, I was surrounded by hundreds of DIY projects that had been dreamt up by hackers and makers around the world. The projects were magnificent! From the moment I walked through the gates for set-up on Friday till we had to leave to drive home on Sunday, there was one display that I was magnetized to. From afar it imply looked like a large wooden sculpture of an soccer ball. I had to know more. I immediately went up and started taking pictures, it was massive and very impressive. The structure was a truncated icosahedron and I hadn’t even seen the best part of the sculpture at that point. Rob Marshall, owner of Hamlet Construction, had turned this ancient design into what he calls the “Happy Fun Ball.” Read More

### Don’t Miss Danica McKellar’s Latest Math Book, Girls Get Curves

Geometry was one of my favorite kinds of math. I loved learning how shapes worked, and even memorizing theorems and postulates. I especially enjoyed the challenge of doing geometric proofs. I looked at them like logic puzzles, forcing me to find a way from point A to point B using only the tools I knew up to that point. But I realize that I’m one of the lucky ones, girls who naturally like math, in and of itself. Not all girls are that lucky, however, and Danica McKellar writes books for those girls. Read More

### Danica McKellar’s Girls Get Curves Makes Geometry Relevant

Ever since Danica McKellar, the actor (best known for playing Winnie in The Wonder Years) and UCLA-trained mathematician, began her New York Times-bestselling series of math books for girls in 2007, I’ve been curious to see what’s going on that’s … Read More

### Danica McKellar Interviewed on NPR’s Science Friday

Yesterday, geeky mom Danica McKellar was interviewed on NPR about her new book, Girls Get Curves: Geometry Takes Shape, her latest effort about teaching math to (especially) teenage girls. This book is geared toward, surprise, geometry. Read More

### GeekDad Puzzle of the Week Solution: Planetary Paths

This past week’s puzzle was an interesting study in math and human nature. While we did not have nearly as many solutions offered as we do most weeks, *all* of the solutions offered were correct! Here is the … Read More

### GeekDad Puzzle of the Week: Planetary Paths

Just past UDFj-39546284, one of the most distant galaxies discovered to date by the Hubble telescope, is a small, flat/disc universe with six planets that ring an asteroid field. Over time, robot traders mining this section of space have hewn … Read More

### Geek Celebrates Hanukkah With Science: Day Eight

It’s been another wonderful science-driven holiday season! We’ve experimented with balloons that blast-off, nearly unsinkable dinghies, delicious math candies, stackable liquids, desiccated dancers, split light, and put a minature Jaques Cousteau in a bottle. Tonight we’re going to give Hanukkah a fine send-off with another trick of the light.   I got the idea for… Read More

### GeekDad Challenge of the Week: Dog vs. Orchid

It’s just past two o’clock in the morning and fortunately your kids are asleep. Unfortunately, you are not. There you stand under the twinkling stars, shivering in your boxer shorts, holding a leash and contemplating the veracity of the phrase … Read More

### Have Math Formulas on Hand (on Your iPhone or iPad) for Quick Reference

As you may know from my past posts, I’m always on the lookout for math apps that are more than just arithmetic. While not a teaching app, I have found another that fits the bill. Math Formulas is a reference … Read More

### Geometry Stash: Theorems at the Tap of a Button

I have very fond memories of high school geometry. Memorizing theorems wasn’t too hard, and solving proofs was like solving the logic puzzles that I did for fun anyway. But the theorems were scattered throughout the textbook, and it was … Read More

### Puzzle of the Week: All My Base Have Been Lost — Solution

This week, our geekogropher needed your help finding a capusle that contains the location of a geek community, where it is thought only geek families live and work. Many of you provided correct answers and Robert’s was randomly chosen. He … Read More

### GeekDad Puzzle of the Week: All My Base Have Been Lost.

This week, our geekogropher needs your help finding a capusle that contains the location of a geek community, where it is thought only geek families live and work. E-mail your solution by Thursday at 10:00 PM EST for your chance … Read More

### GeekDad Puzzle of the Week: Quickly Now, the Clock is Ticking.

This week, Pedro Vex must help navigate the Mars Exploration Rover, Spirit to safety before winter sets in. Solutions may be given as mathematics with explanation or as a diagram with explanation. Feel free to download, mark up, and attach … Read More