| La Casemath | fr | Math problems |
| LA FORMIGA MATEMATICA. | sp | Sites offering various training techniques |
| La galerie de portraits des mathématiciens | fr | History of mathematics |
| La geometria sulla sfera | it | Methodical materials |
| La Lettre de la Preuve | en,fr,sp | History of mathematics |
| La matematica a distanza | it | Methodical materials |
| La Matematica en sus personajes | sp | History of mathematics |
| La matematica italiana 1800-1950 | it | History of mathematics |
| La mathematique au secondaire | fr | Sites with math lessons |
| La mesure du temps | fr | Encyclopaedia and musea |
| La Mujer en las Matemáticas y las Ciencias de Cómputos | sp | History of mathematics |
| La OIE y la SIPROMA convocan el II Concurso Iberoamericano de Problemas de Matemáticas. | sp | Texts and documents |
| La quadrature infernale | fr | Sites with math tests |
| La red de Icarito | sp | General educational sites |
| La Societe Mathematique de France | fr | Mathematical societies |
| La société mathématique du Canada (ressources et informations) | fr | Mathematical societies |
| La storia del calcolo infinitesimale nei libri della biblioteca matematica | it | Numbers, functions, theorems … |
| La storia del calcolo infinitesimale nei libri della biblioteca matematica | it | Numbers, functions, theorems … |
| La Storia della Matematica | it | History of mathematics |
| La taverne de l'Irlandais | fr | Methodical materials |
| Lab of logic theory | ru | Mathematical societies |
| LAB. MATEMATICA | it | Mathematics lexicon |
| Laboratório de Informática para o Ensino da Matemática - LIEM | pt,en | Archives of math programs and training math programs |
| labrea.stanford.edu | en | TeX |
| Labyrinthe des mathйmatiques | fr,en,de | Educational portals |
| L'academie de Rennes | fr | Sites with math tests |
| L'aguzzacervello - Giochi matematici, software gratuiti, passatempi, formule matematiche e tanto altro | it | Sites offering various training techniques |
| Lake Forest College | en | Math servers (ftp and gopher) |
| Lam 2000 | sp | Encyclopaedia and musea |
| Lam 2000 | sp | History of mathematics |
| Landesverband Mathematikwettbewerbe NRW | de | Olympiads, competitions... |
| LAPACK Users' Guide | en | Directories with links to mathematics software |
| L'association des professeurs de mathematiques de l'enseignement public | fr | Mathematical societies |
| L'association des professeurs de mathematiques de l'enseignement public | fr | Teachers' associations |
| L'association Enseignement Public et Informatique | fr | Mathematical societies |
| L'association Enseignement Public et Informatique | fr | Teachers' associations |
| Le Cafe Pedagogique | fr | Didactics |
| Le Club Mathématiques - Genève | fr | Texts and documents |
| Le corps des nombres complexes | fr | Methodical materials |
| Le Cyber-Express | fr | Computer magazines |
| le grand fossé des maths | fr | Methodical materials |
| Le grand Mathulu | fr | Sites with math tests |
| Le lexique intermédaire | fr | Mathematics lexicon |
| Le Mathweb | fr | Sites offering various training techniques |
| Le monde de la Ti-83 - | fr | Sites with math tools |
| Le nombre d'Or - site canadien | fr | Numbers, functions, theorems … |
| Le nombre d'Or | fr | Numbers, functions, theorems … |
| Le pagine della matematica di Andrea Selleri | it | Texts and documents |
| le portail education *votre point de depart sur le web* - Redirect by ulimit.com | fr | Others links |
| Le portail mathématiques | fr | Educational portals |
| Le serveur de l'academie de Lille | fr | Mathematical societies |
| Leading Math and Science Videos, Software Provider for k12, College, and University | en | Mathematics software |
| Leaning Pine Software | en | Mathematics software |
| Learn Basic Math Skills with MathFacts | en | Methodical materials |
| Learn Your Basic Math Facts | en | Mathematics software |
| learn:line - Bildungsserver NRW | de | General educational sites |
| Learning 2000 | en | Sites with math tools |
| Learning Center Ideas | en | Education-related sites |
| Learning in Motion | en | Sites with math tools |
| Learning in Motion | en | Sites with math tools |
| Learning is fun! Learn Wired. | de | Sites offering various training techniques |
| Learning Season | en | Mathematics software |
| L'Ecran des Maths - Accueil | fr | Archives of math programs and training math programs |
| Ledu, Gérard | fr | Mathematics software |
| Leeds University | en | Math servers (ftp and gopher) |
| Lehrproben und Unterrichtsmaterial fur die Grundschule | de | Texts and documents |
| Leitseite Lerntechniken | de | Archives of math programs and training math programs |
| L'Encyclopedie de L'Agora: La guerre et les mathematiques | fr | Encyclopaedia and musea |
| L'enseignement mathématique | fr | Pedagogical journals |
| Lernen Experimental | de | Sites with math tools |
| Lernsoftware: Valgetal und Matego | de | Mathematics software |
| Les champions des maths | fr,en | Sites with math tests |
| Les mathematiques : "foret" y voir! | fr | Sites offering various training techniques |
| Les Mathematiques | fr | General educational sites |
| Les Maths en Seconde ! Le site web | fr | Math theory |
| Les Maths sur Internet | fr | Others links |
| Les mathématiques de N. DIDRIT (Boub) | fr | Personal mathematics home pages |
| Les mots sturmiens | fr,en | Mathematics lexicon |
| Les énigmes et histoires de famille | fr | Sites with math tests |
| L'esprit galoisien - page d'acceuil | fr | History of mathematics |
| Lesson plans and classroom activities for math teachers | en | Didactics |
| Lesson Tutor: Introducing Decimals and Place Values | en | Sites with math lessons |
| Lexique anglais francais de termes mathematiques | fr,en | Mathematics lexicon |
| Lexique de mathématique pour l'enseignement primaire et secondaire | fr | Mathematics lexicon |
| Library of Congress Global Electronic Library . | en | Math servers (ftp and gopher) |
| Library of Congress | en | Math libraries |
| Library of Congress | en | Math libraries |
| Lidia Gutierrez: Tesis | sp | Didactics |
| Limites Resolvidos | pt | Math solutions |
| Link per chi studia matematica | it | Small selections of links |
| Links de Matematica | pt | Small selections of links |
| L'institut Fourier - UFR de Mathématiques | fr | Mathematical societies |
| L'IREM de Lille | fr | Mathematical societies |
| L'IREM de Lille | fr | Teachers' associations |
| List of Dictionaries | en | Mathematics lexicon |
| Literacy Centres Ideas | en | Education-related sites |
| LiveMath-Start | de | Sites offering various training techniques |
| Living Worksheets for Mathematics | en | Methodical materials |
| Logic in Computer Science | en | Math servers (ftp and gopher) |
| Logiciels de mathematiques distribues par Integral Software | fr | Directories with links to mathematics software |
| Logiciels de mathematiques distribues par Integral Software | fr | Links to math tools |
| Logiciels Mathematiques | fr | Directories with links to mathematics software |
| Logiciels Maths Colleges mathematiques | fr | Sites with math tools |
| Logiciels sous Windows а tйlйcharger | fr | Sites with math tools |
| Logimaths | fr | Sites with math tools |
| Logitron -logiciels éducatifs | fr | Archives of math programs and training math programs |
| London Mathematical Society | en | Math servers (ftp and gopher) |
| London Mathematical Society | fr | Mathematical societies |
| Los Angeles City Teachers' Mathematics Association | en | Teacher-oriented sites |
| Los Angeles City Teachers' Mathematics Association | en | Teachers' associations |
| Louisiana Association of Teachers of Mathematics (LATM) | en | Teacher-oriented sites |
| Louisiana Association of Teachers of Mathematics (LATM) | en | Teachers' associations |
| Louisiana State University | en | Math servers (ftp and gopher) |
| L'univers de Pi | fr | Numbers, functions, theorems … |
| Lycée de Vienne Saint-Romain-en-Gal | fr | Sites with math lessons |
| Lуgica Matemбtica | pt | Logics, paradoxes … |
| Lуgicas Nгo-Clбssicas | pt | Logics, paradoxes … |
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