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  1. Learning & Mathematics Discussion Sessions - Math Forum
    Newsgroup discussions inspired by recent work on how students learn mathematics among mathematicians, teachers of mathematics, and students of educational psychology that occurred on the Math Forum's newsgroup geometry.pre-college. Much of the work around ideas that form the basis of the NCTM Standards indicates that the traditional classroom needs to be changed if more effective learning (learning that is more conceptual and less formulaic) is to take place. Summaries of articles posted to the group include implications for classroom practice. Annotated bibliographies include: Alternative Instruction and Alternative, Performance-Based Assessment; Cross-Age Tutoring; Girls' Attitudes, Self-Expectations, and Performance in Math; Limited English Proficiency Students and Mathematics; Mathematics and Motivation. more>>

  2. Mathblogging.org - Breuer, Felix; von Heymann, Frederik; and Krautzberger, Peter
    See a list of latest posts across a wide range of math blogs; search them; or view them by category, stats, and tags. Two current Ph.D. candidates and a postdoctoral fellow run Mathblogging.org. more>>

  3. The Mathematics Teaching Community - Beckmann, Sybilla; and Hicks, Jacob; Department of Mathematics; University of Georgia
    An online discussion community for those "passionate about math teaching" who want to "foster deeper collective thinking and exchange of ideas about mathematics teaching.... in a way that goes beyond coffee room conversations." Dating back to 2012, posts have included "Mazes (and topology?) for elementary school students," "Cross Multiply to compare fractions," "Response to Diane Ravitch's posting on why she cannot support the Common Core State Standards," "Explaining 0 divided by 0," "To Secretary Duncan: policies should support teaching profession, not test-based accountability," "Praise Versus Encouragement in the Mathematics Classroom," "Disappearing Tricks with the Common Core," "Why we shouldn't write 50 ÷ 8 = 6 R 2," and "Geometric Explanation of Triangular Numbers — Can it Be Extended?" and "Bundle & Unbundle: Do it either way!" and "'speed drills' and 'timed exercises': helpful or counterproductive?" Discussants have included Sybilla Beckmann, William McCallum, Raymond Johnson, Ashli Black, and Tad Watanabe. more>>


Mason error

component stack:   /library/branch.html
code stack:   /var/lib/mason/obj/library/branch.html:208

debug info:   Debug file is '/var/lib/mason/debug/anon/18'.


raw error:

error while executing /library/branch.html:
Server message number=1105 severity=17 state=1 line=1 text=Can't allocate space for object 'keystorage' in database 'catalog' because 'default' segment is full/has no free extents. If you ran out of space in syslogs, dump the transaction log. Otherwise, use ALTER DATABASE or sp_extendsegment to increase size of the segment.
Statement=INSERT INTO keystorage ( keys ) VALUES ( '68496;75486;77567;68512;63812;865;3289;7234;74896;75398;77203;77611;77646;76481;76940;77303;66499;66500;6791;6801;63021;9583;2818;74642;75875;6802;76781;11282;6803;75357;74279;63793;75841;77096;77205;76964;772...
Server message number=7101 severity=17 state=1 line=1 text=Unable to allocate new text value, dbid 6.
Statement=INSERT INTO keystorage ( keys ) VALUES ( '68496;75486;77567;68512;63812;865;3289;7234;74896;75398;77203;77611;77646;76481;76940;77303;66499;66500;6791;6801;63021;9583;2818;74642;75875;6802;76781;11282;6803;75357;74279;63793;75841;77096;77205;76964;772...
HTML::Mason::Interp::__ANON__('Server message number=1105 severity=17 state=1 line=1 text=Can\'...') called at /usr/lib/perl5/site_perl/5.6.0/Forum/Key.pm line 284
Forum::Key::store(undef, undef, 'Forum::Key=HASH(0x922664c)') called at /var/lib/mason/obj/library/branch.html line 208
HTML::Mason::Commands::__ANON__('passed_args', 'HASH(0x9058018)', 'tree', 'resource_types', 'branch', 'web_discussions') called at /usr/lib/perl5/site_perl/5.6.0/HTML/Mason/Component.pm line 131
HTML::Mason::Component::run('HTML::Mason::Component::FileBased=HASH(0x921ba3c)', 'passed_args', 'HASH(0x9058018)', 'tree', 'resource_types', 'branch', 'web_discussions') called at /usr/lib/perl5/site_perl/5.6.0/HTML/Mason/Request.pm line 653
require 0 called at /usr/lib/perl5/site_perl/5.6.0/HTML/Mason/Request.pm line 653
HTML::Mason::Request::comp('HTML::Mason::Request::ApacheHandler=HASH(0x91fdc6c)', '/library/branch.html', 'passed_args', 'HASH(0x9058018)', 'tree', 'resource_types', 'branch', 'web_discussions') called at /usr/lib/perl5/site_perl/5.6.0/HTML/Mason/Commands.pm line 70
HTML::Mason::Commands::mc_comp('/library/branch.html', 'passed_args', 'HASH(0x9058018)', 'tree', 'resource_types', 'branch', 'web_discussions') called at /var/lib/mason/obj/library/dhandler line 90
HTML::Mason::Commands::__ANON__('start_at', 1, 'num_to_see', 50, 'keyid', 39506254) called at /usr/lib/perl5/site_perl/5.6.0/HTML/Mason/Component.pm line 131
HTML::Mason::Component::run('HTML::Mason::Component::FileBased=HASH(0x9203a34)', 'start_at', 1, 'num_to_see', 50, 'keyid', 39506254) called at /usr/lib/perl5/site_perl/5.6.0/HTML/Mason/Request.pm line 653
require 0 called at /usr/lib/perl5/site_perl/5.6.0/HTML/Mason/Request.pm line 653
HTML::Mason::Request::comp('HTML::Mason::Request::ApacheHandler=HASH(0x91fdc6c)', 1, 'HTML::Mason::Request::ApacheHandler=HASH(0x91fdc6c)', 'HASH(0x921b784)', 'HTML::Mason::Component::FileBased=HASH(0x9203a34)', 'start_at', 1, 'num_to_see', ...) called at /usr/lib/perl5/site_perl/5.6.0/HTML/Mason/Request.pm line 159
require 0 called at /usr/lib/perl5/site_perl/5.6.0/HTML/Mason/Request.pm line 159
HTML::Mason::Request::exec('HTML::Mason::Request::ApacheHandler=HASH(0x91fdc6c)', '/library/resource_types/web_discussions', 'start_at', 1, 'num_to_see', 50, 'keyid', 39506254) called at /usr/lib/perl5/site_perl/5.6.0/HTML/Mason/ApacheHandler.pm line 914
HTML::Mason::ApacheHandler::handle_request_1('HTML::Mason::ApacheHandler=HASH(0x8de2afc)', 'Apache=SCALAR(0x8e1a674)', 'HTML::Mason::Request::ApacheHandler=HASH(0x91fdc6c)', 'HASH(0x9210e14)') called at /usr/lib/perl5/site_perl/5.6.0/HTML/Mason/ApacheHandler.pm line 560
require 0 called at /usr/lib/perl5/site_perl/5.6.0/HTML/Mason/ApacheHandler.pm line 560
HTML::Mason::ApacheHandler::handle_request('HTML::Mason::ApacheHandler=HASH(0x8de2afc)', 'Apache=SCALAR(0x8e1a674)') called at /etc/httpd/conf/handler.pl line 97
HTML::Mason::handler('Apache=SCALAR(0x8e1a674)') called at /dev/null line 0
require 0 called at /dev/null line 0