Skip to main content

Fraction Krypto

Krypto is a game I learned about at a conference where Dr. Lola May presented (in like 1993, I think!). I didn't realize until recently that it was a commercial game that could be purchased :-)   I had simply used the game idea from time to time, following the rules as laid out in the book. Krypto can be played with whole numbers or fractions (and with positive and negative integers as well, I'm sure!), but for today, I'm going to talk about the use of it with fractions.

The rules are simple (kind of like the "24" game):
1. Choose 5 common fractions, with denominators of halves, thirds, fourths, sixths, eighths, tenths and twelfths.
2. Students add, subtract, multiply, and/or divide the fractions to make the 5 fractions equal the target number of 1.
3. Students can receive points for meeting the target number of 1. If they do so using only 3 numbers, they get 300 pts; 4 numbers = 400 pts; all 5 numbers = 1,000 pts....you can set up the point system any way you'd like.

We're going to try it a few days next week, after we finish all the operations, and since I have my fraction cards, I'll just hang them on the board:


For this particular set of fractions, I found that 3/4 x 2/3 = 1/2 + /2 = 1; that uses only 3 fractions, so I'd get 300 points.

 2/3 + 2/6 = 1, but that's only 2 fractions. I may consider giving points for using just 2 fractions though, until they get the hang of the game.

Can you make the 5 fractions equal 1?



Labels:

Comments

Post a Comment

Popular posts from this blog

Memory Wheels - First Day, Last Day, and Any Day in Between!

This post has been moved to:  http://www.cognitivecardiowithmsmm.com/blog/memory-wheels-first-day-last-day-and-any-day-in-between
7 comments
Read more

Love to Doodle (and a freedbie)

Exponents Color by Number For most of my school life as a student (and even as an adult, during PD), I have really liked doodling! During lectures, discussions...it would help me focus, but also give me something to make me look busy, so I wouldn't get called on in class! I always hated being called on and almost never participated voluntarily:) I liked to draw cubes, rectangles, squiggly lines, etc, and color in different parts of the doodles. Download this freebie:-) I really wanted to make some color by number activities. Since I am not good at creating actual pictures, I decided to make my color by numbers similar to my random drawing/doodling. My Exponent Color by Number is most similar to my past doodles, but I thought it was a little too random, so I started using actual shapes. The Integer Operations Color by Number (freebie), as well as most of my other color by numbers are more structured, but so much fun for me to make! Computerized doodling! Anyone else
Post a Comment
Read more

Math Class - First Day Activity

Rectangle of pentominoes Many 6th graders seem to have a pretty negative attitude about math, so I try to do something interesting to "grab" them during our first class. Last year, during the first math class, we spent part of the period working with pentominoes. Before working with the pentominoes, however, we played a name game so we could learn each others' names (I find it impossible to start anything else if I don't know some names, and fortunately, I learn them fairly quickly). rectangle outline For the activity, I divided the students into groups of 3 or 4. The directions for the activity were not complicated - the task was to make a rectangle, using all of the pentominoes. I gave students an outline of the rectangle, as pictured to the left, so they would know the correct size of the rectangle. The squares in the grid are each one inch. The rectangle is 5 squares (inches) wide and 13 inches long (13 inches includes the row that has the "Pent
2 comments
Read more