Канал: Arthur Lee

make your own spiderweb

make your own spiderweb

substitution and scrubbing in Grasphable Math

substitution and scrubbing in Grasphable Math

forming an equation

forming an equation

combination of stamps

combination of stamps

find a number by balancing with 1,3,9

find a number by balancing with 1,3,9

Two dice experiment in Polypad

Two dice experiment in Polypad

Arthur Lee Live Stream

Arthur Lee Live Stream

rhombus and rectangle

rhombus and rectangle

angles in a triangle (matching 1)

angles in a triangle (matching 1)

angles in a triangle (matching 2)

angles in a triangle (matching 2)

angles in a triangle (zooming)

angles in a triangle (zooming)

Clairaut explained triangle angle sum

Clairaut explained triangle angle sum

angles in a triangle exploration

angles in a triangle exploration

Arthur Studio

Arthur Studio

folding a triangle to find the angle sum

folding a triangle to find the angle sum

making 1 million in Polypad

making 1 million in Polypad

Desmos demo 2024 Jan (computation layer) part 3

Desmos demo 2024 Jan (computation layer) part 3

Desmos demo 2024 Jan (computation layer) part 2

Desmos demo 2024 Jan (computation layer) part 2

Desmos demo 2024 Jan (computation layer) part 1

Desmos demo 2024 Jan (computation layer) part 1

Make 2 parallelograms; multiple solutions and exploration in Desmos and GeoGebra

Make 2 parallelograms; multiple solutions and exploration in Desmos and GeoGebra

平行四邊形探究活動建議

平行四邊形探究活動建議

小學數學比賽2023 Desmos 題目簡介

小學數學比賽2023 Desmos 題目簡介

Primary Maths Contest via Desmos

Primary Maths Contest via Desmos

Desmos workshop 2023Nov part 2

Desmos workshop 2023Nov part 2

Desmos workshop 2023Nov part 1

Desmos workshop 2023Nov part 1

Desmos workshop 2023Nov part 4

Desmos workshop 2023Nov part 4

Desmos workshop 2023Nov part 3

Desmos workshop 2023Nov part 3

online workshops

online workshops

Square base pyramid from A4 paper folding

Square base pyramid from A4 paper folding

Flipped Learning Quick Reference

Flipped Learning Quick Reference

Arthur Studio

Arthur Studio

"Bucket of Zero" in Polypad

"Bucket of Zero" in Polypad

Two Dice experiment in Polypad

Two Dice experiment in Polypad

Area of a circle

Area of a circle

Thinking bingo in polypad

Thinking bingo in polypad

Sample Means Distribution in CODAP

Sample Means Distribution in CODAP

Cut & Paste exploration leading to the Pythagoras' Theore

Cut & Paste exploration leading to the Pythagoras' Theore

Arthur Studio

Arthur Studio

cutting a mooncake (or any circular cake) into 3 or 6 pieces with a set square

cutting a mooncake (or any circular cake) into 3 or 6 pieces with a set square

circle area in polypad

circle area in polypad

Polygon Area basic

Polygon Area basic

completing square in Polypad

completing square in Polypad

binomial expansion and factorisation using algebra tiles in polypad

binomial expansion and factorisation using algebra tiles in polypad

angle sum of triangle in Word drawing (silent demo)

angle sum of triangle in Word drawing (silent demo)

angle sum of polygon (short introduction)

angle sum of polygon (short introduction)

1 Square vs 2 squares

1 Square vs 2 squares

新教師數學研習課程2021-2022 (教學分享節錄)

新教師數學研習課程2021-2022 (教學分享節錄)

linear inequality with 2 unknowns in Desmos Graphing Calculator

linear inequality with 2 unknowns in Desmos Graphing Calculator

GeoGebra activity to 'open in app'

GeoGebra activity to 'open in app'

birds

birds

online workshop 2021 Nov 17

online workshop 2021 Nov 17

online workshop 2021 Nov 3

online workshop 2021 Nov 3

making a trig activity in geogebra

making a trig activity in geogebra

circular stitching in GeoGebra

circular stitching in GeoGebra

lots of fun playing with simple trig drawing in Desmos

lots of fun playing with simple trig drawing in Desmos

mid-point theorem via paper cutting in Polypad

mid-point theorem via paper cutting in Polypad

Desmos activity with CL

Desmos activity with CL

CODAP for exploratory data analysis

CODAP for exploratory data analysis

Path of a cyclone (coordinates of a moving point on a line)

Path of a cyclone (coordinates of a moving point on a line)

workshop2021Oct12

workshop2021Oct12

2 spinners experiment details

2 spinners experiment details

2 spinners experiment 2

2 spinners experiment 2

2 spinners experiment 1

2 spinners experiment 1

Desmos card sort demo

Desmos card sort demo

making some graphing tasks in Desmos activity

making some graphing tasks in Desmos activity

online workshop 2 (HKU Maths Ed)

online workshop 2 (HKU Maths Ed)

make a quadratic graph

make a quadratic graph

fit a circle

fit a circle

line and parabola

line and parabola

online workshop 1 (HKU Maths Ed)

online workshop 1 (HKU Maths Ed)

Screen Recording 2021 09 29 at 5 14 18 PM

Screen Recording 2021 09 29 at 5 14 18 PM

create your own nets in #polypad #mathigon to fold and unfold

create your own nets in #polypad #mathigon to fold and unfold

Create rhombuses and rectangles for the Tokyo 2020 Olympic logo

making Tokyo 2020 Olympic logo in Polypad

Arthur Lee's Personal Meeting Room

Arthur Lee's Personal Meeting Room

geometric exploration about 6 mid-points from 4 vertices

geometric exploration about 6 mid-points from 4 vertices

cevian ratio explore quick demo

cevian ratio explore quick demo

Some examples of using Computation Layer in making Desmos tasks

Some examples of using Computation Layer in making Desmos tasks

making area and coordinates Desmos tasks

making area and coordinates Desmos tasks

unit circle and segments

unit circle and segments

unit circle pattern

unit circle pattern

Desmos technique; graphing calculator

Desmos technique; graphing calculator

Desmos technique: Card Sort

Desmos technique: Card Sort

Desmos technique; geometry tool

Desmos technique; geometry tool

Desmos technique; using tables

Desmos technique; using tables

Desmos workshop 2021 Feb 5 HKASME

Desmos workshop 2021 Feb 5 HKASME

Cairo Street Tile drawing (2)

Cairo Street Tile drawing (2)

Cairo Street Tiles drawing in Google Slides

Cairo Street Tiles drawing in Google Slides

simple / compound interest applet

simple / compound interest applet

successive percentage changes

successive percentage changes

連續百分數增減

連續百分數增減

單利息 / 複利息

單利息 / 複利息

GeoGebra Workshop Nov 6

GeoGebra Workshop Nov 6

solving exponential equations

solving exponential equations

doubling time in exponential growth and log scale further explained

doubling time in exponential growth and log scale further explained

log scale explained continued

log scale explained continued

log scale explained

log scale explained

explore radian

explore radian

number machine activity

number machine activity

dynamic table in GeoGebra spreadsheet

dynamic table in GeoGebra spreadsheet

dynamic table of powers

dynamic table of powers

playing with powers of 2

playing with powers of 2

make a spreadsheet table with numerical expressions in GeoGebra

make a spreadsheet table with numerical expressions in GeoGebra

bird

bird

Hanoi 2006

Hanoi 2006

birds

birds

symmetry lesson responses

symmetry lesson responses

horizontal translation of graph with the context of virus spread

horizontal translation of graph with the context of virus spread

GeoGebra Workshop for Beginners

GeoGebra Workshop for Beginners

Zoom lesson demo 1

Zoom lesson demo 1

an improved tetrahedron net

an improved tetrahedron net

special tetrahedron from A4 paper

special tetrahedron from A4 paper

tetrahedrons in a cube

tetrahedrons in a cube

$adding fractions$

adding fractions

make a regular tetrahedron from any envelope

make a regular tetrahedron from any envelope

semi-circles and area

semi-circles and area

homework examples 2

homework examples 2

homework examples 1

homework examples 1

Malcolm Swan

Malcolm Swan

MC Questions and Desmos

MC Questions and Desmos

Diagnostic Questions

Diagnostic Questions

Embedded Formative Assessment

Embedded Formative Assessment

NCETM Teaching for Mastery

NCETM Teaching for Mastery

pgde note1

pgde note1

polygon pattern by rotation

polygon pattern by rotation

GIHK07

GIHK07

Desmos Workshop 2b (Oct 24)

Desmos Workshop 2b (Oct 24)

Desmos Workshop 2a (Oct 24)

Desmos Workshop 2a (Oct 24)

GeoGebra Workshop 2b (2019 Oct 23)

GeoGebra Workshop 2b (2019 Oct 23)

GeoGebra Workshop 2c (2019 Oct 23)

GeoGebra Workshop 2c (2019 Oct 23)

GeoGebra Workshop 2a (2019 Oct 23)

GeoGebra Workshop 2a (2019 Oct 23)

Desmos Workshop 1b (2019 Oct 10)

Desmos Workshop 1b (2019 Oct 10)

Desmos Workshop 1a (2019 Oct 10)

Desmos Workshop 1a (2019 Oct 10)

GeoGebra Workshop 1b (2019 Oct 9)

GeoGebra Workshop 1b (2019 Oct 9)

GeoGebra Workshop 1a (2019 Oct 9)

GeoGebra Workshop 1a (2019 Oct 9)

quadratic graph translation

quadratic graph translation

making simple MC tasks part 2

making simple MC tasks part 2

making simple MC tasks part 1

making simple MC tasks part 1

Teacher Dashboard in Desmos Activity

Teacher Dashboard in Desmos Activity

Desmos Activity interface

Desmos Activity interface

CODAP

CODAP

CODAP sampler

CODAP sampler

U-STEMist GeoGebra Workshop 2018 (part2/2)

U-STEMist GeoGebra Workshop 2018 (part2/2)

U-STEMist GeoGebra Workshop 2018 (part1/2)

U-STEMist GeoGebra Workshop 2018 (part1/2)

Fractal by Sequences of Dilation

Fractal by Sequences of Dilation

maximum volume of a cone

maximum volume of a cone

quadratic: how far from roots to centre

quadratic: how far from roots to centre

quadratic graph and manipulation

quadratic graph and manipulation

graph transformation without symbolic parameters

graph transformation without symbolic parameters

Diagnostic Questions

Diagnostic Questions

construct an equiangular pentagon

construct an equiangular pentagon

calculation

calculation

desmos rotation

desmos rotation

Is it reflection or rotation?

Is it reflection or rotation?

Cube Rotation

Cube Rotation

lighthouse problem

lighthouse problem

log transform

log transform

Family of 4 children

Family of 4 children

graspable math simple eq

graspable math simple eq

cone activity

cone activity

2M4

2M4

sequence of triangles

sequence of triangles

locus: AG=2GB

locus: AG=2GB

QI numbers

QI numbers

QI Pythagoras

QI Pythagoras

touring Winton Gallery

touring Winton Gallery

Winton Gallery (visualising numbers)

Winton Gallery (visualising numbers)

KS1 Time Desmos Activity Demo

KS1 Time Desmos Activity Demo

X-maths Tree

X-maths Tree

generate patterns in circular geoboard

generate patterns in circular geoboard

Titanic data in Tuvalabs

Titanic data in Tuvalabs

Canterbury Cathedral Gable Window Geometry

Canterbury Cathedral Gable Window Geometry

apps in my iPad

apps in my iPad

analyzing 3D stitching

analyzing 3D stitching

more about 3D stitching

more about 3D stitching

golden ratio calculation

golden ratio calculation

2016

2016

playing with powers of 2

playing with powers of 2

spiral drawing

spiral drawing

wallpaper drawing

wallpaper drawing

TinkerPlots demo

TinkerPlots demo

compare 2 quadratic graphs

compare 2 quadratic graphs

epidemic simulation

epidemic simulation

epidemic

epidemic

Random Triangle GGB

Random Triangle GGB

redefine vectors to make a tessellation

redefine vectors to make a tessellation

Using MyScript Calculator

Using MyScript Calculator

mini tangram

mini tangram

Copy and Modify Files in GeoGebraTube

Copy and Modify Files in GeoGebraTube

GIHK html5 Primary Math Collection

GIHK html5 Primary Math Collection

GeoGebra html5 in ipad

GeoGebra html5 in ipad

area and perimeter

area and perimeter

antiderivative

antiderivative

GeoGebra Freehand Shape Tool 1

GeoGebra Freehand Shape Tool 1

GeoGebra CAS test5

GeoGebra CAS test5

GeoGebra CAS Test4

GeoGebra CAS Test4

GeoGebra CAS test3

GeoGebra CAS test3

GeoGebra CAS Test2

GeoGebra CAS Test2

A4 shaped paper from a square

A4 shaped paper from a square

GeoGebra CAS test1

GeoGebra CAS test1