## GeekDad Puzzle of the Week Solution – Modulo Fibonacci

Were you able to find the Fibonacci numbersthat have their position identified by the sum of their last few digits?

## GeekDad Puzzle of the Week – Modulo Fibonacci

Mow many Fibonacci numbers have their position identified by the sum of their last few digits?

## GeekDad Puzzle of the Week Solution – Base 2 Number Find

How many of the eight 85s and the eight 170s could you find in this binary number search?

## GeekDad Puzzle of the Week – Base 2 Number Find

Can you find the eight 85s and the eight 170s in this binary number search?

## GeekDad Puzzle of the Week Solution – Flipping Digits

Were you able to find the numeric auction bidding signs that required a “bottom bar” to avoid possible bidding confusion?

## GeekDad Puzzle of the Week – Flipping Digits

If there are 650 different participating parties in an auction, each with their own consecutive number, how many numbers require a “bottom bar” below them to avoid possible bidding confusion?

## GeekDad Puzzle of the Week Solution – Functional Numeric Wordsearch

Can you find the largest and smallest value of the function listed with strips of digits pulled from the grid?

## Screw Pi Day – Happy e Day!

It’s time to celebrate a day that’s even nerdier than pi day.

## GeekDad Puzzle of the Week – Functional Numeric Wordsearch

Can you find the largest and smallest value of the function listed with strips of digits pulled from the grid?

## GeekDad Puzzle of the Week – Another CrossNumber Solution

This past puzzle as previously posted: Crossword puzzles are fun, but they can be found in most any newspaper. CrossNumber puzzles are not only more fun, but are found almost exclusively here on GeekDad! Clues: Across 0. Bond 2. length of Marianas (km) 4. 1Z (Base 36) 6. Cr 8. PMs in Oman or Yemen […]

## A Language Without Numbers

What would it be like to live in a culture that had no way of representing numbers?

## GeekDad Puzzle of the Week – Another CrossNumber Puzzle

Do you have the geek culture, math, pop culture, and history chops to solve our latest CrossNumber puzzle?

## GeekDad Puzzle of the Week Solution – Palindromic Products

Were you able to find the set of multiplicands of each digits size that make the largest and smallest palindromic product? Is the ThinkGeek prize yours?

## GeekDad Puzzle of the Week – Palindromic Products

What are the largest palindromic products of the appropriate set of digit-sizes for each of three, four, and five-digit numbers?

## Make Sense of Large Numbers With Dictionary of Numbers

XKCD’s latest blog post showcases Dictionary of Numbers, a new tool that helps put large numbers in perspective.

## GeekDad Puzzle of the Week Solution: drowssorC Puzzle

The puzzle as presented: DrowSsorc? Is this another RA Salvatore reference, like Arach-Tinilith? No, it’s actually just the word “crossword” as in “crossword puzzle,” backwards. Technically, this week’s GeekDad Puzzle of the Week is more of a cross-number puzzle, but …

## GeekDad Puzzle of the Week: drowssorC Puzzle

DrowSsorc? Is this another RA Salvatore reference, like Arach-Tinilith? No, it’s actually just the word “crossword” as in “crossword puzzle,” backwards. Technically, this week’s GeekDad Puzzle of the Week is more of a cross-number puzzle, but then I won’t …

## GeekDad Puzzle of the Week: Finger Primes

Counting only on fingers, the four of us at dinner can count from 00,000,000 to 55,555,555 using only single digits from 0-5. In this counting scheme, how many prime numbers do we encounter?

## GeekDad Puzzle of the Week Solution: Carets and Vees

Congratulations to everyone that sent in a correct response for this past’ Mondays Geekdad Puzzle of the Week, “Carets and Vees.” Here is the puzzle as presented:
For your shot at this week’s \$50 ThinkGeek gift certificate, send in the …

## GeekDad Puzzle of the Week: Carets and Vees

Walking Max through some larger numbers, he noticed a few patterns: some numbers increase from digit to digit (such as 1346) and some decrease from digit to digit (such as 9731.) We also noticed that some numbers head …

## Skyrim, Minecraft, and Nerd New Year: The allure of 11-11-11

Oh, humans, how we do like patterns in numbers. There’s even a word for it–apophenia, the hunt for meaning in meaningless data. Including today, there are only two days left in our lifetimes you’ll have to survive your Facebook friends marvelling at the wonder that is noting the time of 02:02:02 on 02-02-02 or 07:07:07 […]

## Fibonacci: It’s Not Pasta

Did you count thirteen petals on the Black-Eyed-Susan? It’s fun for kids to count petals on blooming flowers “springing” out of the ground. It’s also a lesson in higher math. Last week I attended the NSTA Conference in San Francisco where I met Sarah C. Campbell, author of the picture book Growing Patterns. Sarah presented […]

## ABCs and 123s Apps Your Kids Will Actually Enjoy

Montessorium brings the Montessori Method of learning to the iPhone and iPad. In case you’re not familiar with it, the Montessori Method is a more child-directed approach to learning that focuses on different sensory experiences. In keeping with that, both …