
Algebra PreAlgebra and Basic Algebra Math Forum 
 LinkBack  Thread Tools  Display Modes 
February 18th, 2018, 01:26 PM  #1 
Member Joined: Mar 2015 From: Los Angeles Posts: 70 Thanks: 7  "sorta hard" problems
I'm a private tutor. I have a couple students, algebra and prealgebra, who tell me that the teachers make the quizzes and homework easy, and then throw curveballs on the tests. My students wish they had some "curveball" problems to practice with before the tests. I would like recommendations for prealgebra and algebra textbooks that are know for presenting creative problems. NOT "really hard problems", that would be too much for them. Just something beyond the basic, repetitive problems that you see everywhere. Any ideas? Mike 
February 18th, 2018, 06:39 PM  #2 
Senior Member Joined: May 2016 From: USA Posts: 1,038 Thanks: 423 
"Really hard" is in the eye of the beholder. One of the great things about tutoring is that you can make up problems that are suitable for your specific students. What one student finds hard may be simple to another.

February 18th, 2018, 07:42 PM  #3 
Member Joined: Mar 2015 From: Los Angeles Posts: 70 Thanks: 7 
Hi JeffM1, I don't have a lot of experience as a tutor, especially at the lower levels like prealgebra or 7th/8th grade integrated math. Maybe it's just me, but I find it difficult to improvise problems that have a twist. By definition these are the kinds of problems that requires some thought and cleverness on the part of the testwriter. Perhaps after a few more years of tutoring I will have seen it all, and can recall or make up such problems. Here's an example. This is not much of a "twist"  it's the best I can do from memory. (This is another reason I want to find some good textbooks, so I can study them and bookmark the most interesting problems). Let's say we're talking about the area of shapes. If the student knows for a circle $ A = \pi r^2 $, then they may practice that a few times on straightforward problems. They see $r$ and they compute $A$. Maybe the 7th graders are also learning to calculate the area of compound shapes. Perhaps a particular compound shape has a halfcircle and a rectangle of some sort, placed together. Let's say that the students are supposed to infer the diameter of the circle by seeing it's part of one side of the rectangle, and they are given some of the lengths of the other segments. So they infer the diameter $d$. This is where they might make a mistake by forgetting to use $r$ instead of $d$ in the area formula. Or maybe, because we're dealing with a halfcircle, they forget to divide the area by 2. In my example there are a couple ways to make a mistake. My 7th grade student says that the test problems are like this. The opposite of formulaic, instead presenting a new configuration of information on every problem. Which is of course very cool. But it's almost too hard for him. And I don't like that the teachers give him plain problems on the quizzes so there's no preparation. A couple years ago I tutored college algebra classes, and they always put the twistytype problems on the quizzes, while making the tests straightahead. That seems more fair than the reverse. Mike 
February 18th, 2018, 08:45 PM  #4 
Global Moderator Joined: Dec 2006 Posts: 19,049 Thanks: 1618 
For algebra, you could try this book. By the way, Pick's theorem is a really cool way of finding the area of certain polygons. Given its dimensions, as shown, what is the length of the perimeter of the line diagram below? Figure.PNG 
February 18th, 2018, 10:12 PM  #5 
Member Joined: Mar 2015 From: Los Angeles Posts: 70 Thanks: 7 
Thanks, Skipjack. Great that there's such a nice book available for free. Pick's Theorem is very interesting. That perimeter problem is a nice chance to reason creativity. It stretches a student who has only seen the simplest perimeter problems. I can imagine some ways of prompting them to see the method if they don't figure it out on their own. Like first showing a rectangle, then a rectangle with a smaller "rectangle bite" out of the corner. Can they see the "bite" doesn't change the perimeter? 
February 19th, 2018, 10:12 AM  #6 
Math Team Joined: Jan 2015 From: Alabama Posts: 3,189 Thanks: 871 
I had the practice of putting, on my tests, about one third problems that had been on the student's homework, about one third slight variations of homework problems, and one third new problems (solvable using the ideas in the chapter). I had a student who complained, bitterly, that I had included a problem of a type they had never seen before and that had nothing to with the chapter. In fact, it had been one of the homework problems, one that I had gone over in class, and I opened the student's notebook to show exactly where that problem was in his notes. (He did take very good notes!) 

Tags 
problems, sorta hard 
Thread Tools  
Display Modes  

Similar Threads  
Thread  Thread Starter  Forum  Replies  Last Post 
A really hard math problem "Prove that if..."  isel  Algebra  8  September 22nd, 2013 09:35 AM 
A "simple" application of dirac delta "shift theorem"...help  SedaKhold  Calculus  0  February 13th, 2012 11:45 AM 
"separate and integrate" or "Orangutang method"  The Chaz  Calculus  1  August 5th, 2011 09:03 PM 
sample exerimentneed help finding "statistic" and "result"  katie0127  Advanced Statistics  0  December 3rd, 2008 01:54 PM 