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Ragnar A. Antonsson Gambrell

Bitcoin forecast model · Experimental research

Ariadne

Explore daily probabilities, historical tests and model comparisons.

Open Ariadne

Gμν + Λgμν = 8πGc4 Tμν

Classroom clock · Iceland time · Optional always on top

Open clock

Lísa í Orðalandi

250 orð og 50 stuttar setningar með íslenskum upplestri.

Opna verkefnið

Lísa í Orðalandi · Efnisgreinar

Verkefni 2 · 36 lestrartextar úr öllum 12 köflum · Lestrarmæling og prentun.

Opna efnisgreinar

Projects

Japanese
日本語

Japanese writing · Calligraphy & stroke orderBrush charts · Printable sheets · Three complete calligraphy films
Animated stroke studiosLarge characters · Replay · Adjustable speed
Hiragana · 46 charactersKatakana · 46 characters100 common Kanji

Mathematics
Stærðfræði

Fractions · Almenn brot16 problems · Animated methods · Answer feedback
16 dæmi · Aðferðir í hreyfimynd · Endurgjöf

English grammar

NounsNoun types, plurals and possessives · 20 sentencesPossessive adjectivesMy, your, his, her, its, our and their · 20 sentencesArticles: a, an and theChoose the correct article · 20 sentencesPrepositions of timeIn, on and at · 20 sentences
Essential verbsTo do · To have · To be
To doTo haveTo be
Simple pastFive quizzes
Open collection 1. Regular verbs2. Irregular verbs3. Negative sentences4. Questions5. Mixed review
Present continuousFive assignments
Open collection 1. Am, is and are2. Spelling the -ing form3. Negative sentences4. Questions5. Mixed review
Irregular verbsFive assignments
Open collection 1. Common simple-past forms2. More past forms3. Verbs in context4. Negatives and questions5. Mixed review
Comparatives & superlativesComparing people, places and things

English vocabulary

Animals and foodMatch ten animals to their foods · Pictures, writing and printable worksheets

Reading & listening

The Little PrinceFive assignments · Listening, reading and written answers · Printable copies
Open collection Listening & picturesRead and answerA small world: listen and choose10 illustrated listening questionsA small world: read and choose10 questions with simplified passagesA small world: read, find and write10 written answers found in the text
Alice’s Adventures in WonderlandChapters 1–8 · Multiple choice and written answers · Online and PDF
Chapters 1–2Down the Rabbit-Hole · The Pool of Tears
Multiple-choice assignment — online20 questions and a final paragraphWritten assignment — PDF20 short answers and a paragraph · Printable PDF
Chapters 3–5Read, find and write · Thirty short passages
Multiple-choice assignment — online30 questions based on the chapter passagesWritten assignment — online30 short answers · Printable PDF also available
Chapters 6–7The Cheshire Cat and the Mad Tea-Party
Multiple-choice assignment — online20 questions with the original illustrationsWritten assignment — PDFWritten responses for Chapters 6–7 · Printable PDF
Chapter 8The Queen’s Croquet-Ground
Multiple-choice assignment — online18 questions, followed by two written responsesWritten responses — PDFChoose two prompts · Pages 5–6 · Illustration on page 2
LyricsListening and missing wordsMovie Tagline MatchMatch movie taglines to their films

Íslenska

Syngdu með KötuÍslensk söngæfing · verkefni í þróunLísa í Orðalandi250 orð · 50 stuttar setningar · Íslenskur upplesturICElingoTíu próf í íslenskuFerðir GúlliversLesskilningur · Rétt eða rangt
HugarleikfimiEllefu æfingar
Opna yfirlit Hugarleikfimi 1Hugarleikfimi 2Hugarleikfimi 3Hugarleikfimi 4Hugarleikfimi 5Hugarleikfimi 6Hugarleikfimi 7Hugarleikfimi 8Hugarleikfimi 9Hugarleikfimi 10Hugarleikfimi 11Fyrstu skref í HTML
Völundur lætur ekki blekkjast!MálfræðileikurVölundur í þrívíddMálfræðileikur

Philosophy

Íslenska22 verkefni · HeimspekiEnglish22 projects · Philosophy
ÍslenskaAfleiðsla og tilleiðsla — pörun og rökstuðningurEnglishDeduction and induction — matching and reasoning
ÍslenskaRökvillurFjögur verkefni í röðEnglishFallaciesFour activities in sequence
ÍslenskaHugsunartilraunirEnglishThought experiments
ÍslenskaFylkið (1999)EnglishThe Matrix (1999)
ÍslenskaMótsagnir og þversagnirEnglishContradictions and paradoxes
ÍslenskaAfleiðslaEnglishDeduction
ÍslenskaVagnþröngÁtta dæmi í röðEnglishThe trolley problemEight cases in sequence
ÍslenskaSiðferðilegar klípurEnglishMoral dilemmas
ÍslenskaAfleiðsla og tilleiðsla — fjölvalEnglishDeduction and induction — multiple choice
ÍslenskaAfleiðingasiðfræði eða skyldusiðfræðiEnglishConsequentialism or deontology
ÍslenskaSkilyrðislausa skylduboðið (dæmi úr fjölmiðlum)EnglishThe categorical imperative (examples from the media)
ÍslenskaMótsagnir eða þversagnirEnglishContradictions or paradoxes
ÍslenskaSapere aude! [1]EnglishSapere aude! [1]
ÍslenskaSapere aude! [2]EnglishSapere aude! [2]
ÍslenskaStar Trek: The Next Generation [S2:E3]; "Elementary, Dear Data”EnglishStar Trek: The Next Generation [S2:E3]; “Elementary, Dear Data”
ÍslenskaStar Trek: The Next Generation [S6:E12]; "Ship in a Bottle"EnglishStar Trek: The Next Generation [S6:E12]; “Ship in a Bottle”
ÍslenskaDyggðirEnglishVirtues
ÍslenskaErika KirkEnglishErika Kirk
ÍslenskaTilly NorwoodEnglishTilly Norwood
ÍslenskaRökstuðningur í tengslum við siðferðileg álitamálEnglishReasoning about moral issues
ÍslenskaDyggðir og lestirEnglishVirtues and vices
ÍslenskaSapere aude! [3]EnglishSapere aude! [3]
ÍslenskaSkyggnur og dreifiblöð15 skyggnukynningar og eitt dreifiblaðEnglishSupporting slides and handouts15 presentations and one handout · In English

History

Presidents in OrderPlace US presidents in chronological order · Portrait quiz and study mode

Travel & navigation

The London Route ChallengePlan journeys using the London Tube mapFlight Routes · Europe to AsiaChoose a route and follow flights on Flightradar24Flight Lab · Europe to AsiaPilot a flight simulator on four Europe–Asia routes

Typing & digital skills

Vélritun bjargar lífi þínu! Typing is survival!Íslenska og enska · 42 æfingar á hvoru tungumáli · Frá f og j að lengri setningum

Games & strategy

Go · Play the computerBeginner, Intermediate & Advanced · Three board sizes · Illustrated rules

Coding & exploration

TextasmiðjanFyrstu skref í HTML · Gagnvirkur ritillMasters of the MazeExplore the halls, school and airport worlds with Cathy · In developmentMahanakhon · 3D ExplorerExplore a model of Bangkok’s landmark tower

Research

News