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Math Topics for Discussion.
Comics, riddles, puzzles, and more!
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7/7/12
In the sketch, Hugh correctly picks a number between 10 and 100 in base2. How many choices did he have?
How many numbers are between 10 and 100?
How many numbers are between 10 and 100 in base3?
7/1/12
Definitions, questions, and a riddle related to surface area and volume:
1) How many edges are in a square pyramid? In a triangular pyramid? How many sides are in a triangular prism?
2) What is the surface area of a triangular pyramid with all edges of 10 feet?
3) Find the lateral area of a rectangular pyramid with base 4 x 5 feet and slant height of 8 feet.
Riddle: How much dirt is in a square hole that is 3 meters wide, 3 meters long, and 3 meters deep?
(HINT: It is not 27 cubic meters)
SOLUTIONS --->
6/25/12
FRACTIONS
The following is a fractions exercise/puzzle:
(click lower right to enlarge)
6/17/12
Connecting the dots: Thinking outside the box
A classic puzzle: Connect the nine dots with four line segments, AND without lifting your pencil off the paper.
Connecting the Dots SOLUTION
6/10/12
Combinations vs. Permutations
Using each number only once, how many permutations of 1 2 3 4 are there?
How many combinations are there?
Why is this not a combination lock?
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Math Comic #41 "Product Placement" (7-14-12)
7/21/12
An oldie but goodie:
Math Riddle:
Add 1 line segment to correct the following equation:
Webcomic #39 "Math in Hell" (finding surface area of a pyramid)
(click right corner to view)
webcomic #38 "In-Fractions" (inside a math corrections facility)
(click right corner to view)
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<---> SOLUTIONS to fractions exercise/puzzle
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Webcomic #37: Abstract Art: Origins of Cubism (Picasso connects the dots in his own way)
Try the treasure chest puzzle in Combinations & Permutations (Algebra II)
<--- Answers