Found it. http://suntree.es.brevard.k12.fl.us/Students/MathSuperStars/MSS_Grade2.pdf SUNSHINE MATH - 2 (2nd Grade) Earth VI Page 11 Question 4 Suntree Elementary School - Melborne, Florida Teachers of 2nd Grade can be found on the web site, as well as administrators. :grin:
In summary, we know that a few of the posters here paid attention in 2nd grade... but they fail at life
http://it.pinellas.k12.fl.us/school...rs/files/EEB49C9A83E448B6B848DDEC8BD2563F.pdf Some Florida program called Math SuperStars. So, it could be from any of the Florida elementary schools that have adopted this curriculum.
That's it! This points to what I was talking about. I grew up in South Florida. I distinctly remember doing this stuff in 2nd grade, and in particular the lead vs cotton question I mentioned earlier because I got it wrong which made me feel pretty stupid afterwards and obviously stuck with me. It was voluntary at the time and our results would go into a pool and compete against other schools. Most of the questions were similar 'gotcha' type questions or they revolved around critical thinking then actual number crunching. I can't believe this thread reached 10 pages, FFS.
One piece of wood: <===========> One cut makes 2 pieces of wood: <=====| |======> One cut takes 10 minutes One piece of wood: <============> Two cuts makes 3 pieces of wood: <====| |===| |====> If you work at the same pace, two cuts takes 20 minutes.
So I've been thinking about making a video demonstrating this concept, but I don't know how it could possibly take 10 minutes to saw a board in half. Maybe if I get a giant board...
Common sense = 20 minutes Your little picture there = not common sense (because there are not enough facts to assume something like that, with your approach, one could justify any amount of minutes at least between 15 and 20 as the right answer), and doesn't match the drawing next to the question
Yup here it is, THE reason we're falling behind... a test bank has a bad question. /thread tangent: Or the fact that kids aren't being raised, disciplined, or motivated correctly and likely won't absorb whatever good things they're being taught anyway; nor have the desire to question things like the OP bravely did.
Incorrect. If the vertical cut took 10 minutes, the horizontal cut would be 5 (using that peice of wood).
Nope, not a winner. And Rocket River already described this in words in one of the earliest posts on the thread as a theoretical answer, and also came to the conclusion that the question does not support this solution.
Yes, but that is not an answer to the question. I could also slice the board in different ways and come to a result of anything else e.g. between 15 and 20 minutes. The correct answer is 20 minutes. REEKO's picture is a possible way to get to 15 minutes (as already described by Rocket River in one of the earlier posts), but that is not the answer to the question, because you are randomly adding a variable (length of the cut), making it fit exactly to your desired result (15) and then say this is the right answer. If you move the vertical cut a bit to the left, then the horizontal cut takes, e.g. 6 minutes from the right. If you move the vertical cut so far to the left that you can cut the remaining left piece in 10 seconds, you get a result of 10 minutes 10 seconds for three pieces. And so on. That alone should tell you that this cannot be the solution that was asked for.
